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CoinCheck Vision
Viking FinTech Trading LLC · www.VikingFinTechTrading.com
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IMPORTANT: CoinCheck Vision is a visual screening and reference-matching research tool. It does NOT authenticate, grade, assay, appraise, or verify metal content. Visual image matching cannot confirm weight, diameter, edge reeding, or provenance. Physical verification by qualified experts is always required before purchase or investment decisions.

CoinCheck Vision Reference Database

Local-first computer-vision identification for coins, bullion, bars, rounds, ancient coins, and numismatic items. No cloud upload. No subscription fee per scan. Runs entirely on your hardware.

1,100+
Reference Products
776+
With Reference Images
80+
Countries / Regions
20+
Image Formats Supported
100%
On-Premises Processing

Reference Database Showcase

20 representative entries from 20 categories — US gold, US silver, world bullion, numismatic, pre-1933 gold, collector series, and more.

American Gold Eagle — 1/10 oz Bullion Coin (2011) — Obverse
Obverse · Photograph © 2026 Viking FinTech Trading LLC / Andrew Marlow.
American Gold Eagle — 1/10 oz Bullion Coin (2011) — Reverse
Reverse · Photograph © 2026 Viking FinTech Trading LLC / Andrew Marlow.
Bullion Coin

American Gold Eagle — 1/10 oz Bullion Coin (2011)

United States Mint
GOLD .9167 fine (22 karat) 3.393g 16.5mm

Real-world test coin — Andrew Marlow Nikon DSLR photography. Demonstrates 100% VERY_HIGH confidence match from photographer's NEF RAW and JPEG files. Key proof-of-concept for the software.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
2006-S Nevada State Quarter — Silver Proof (PCGS PR69DCAM) — Obverse
Obverse · Photograph © 2026 Viking FinTech Trading LLC / Andrew Marlow.
2006-S Nevada State Quarter — Silver Proof (PCGS PR69DCAM) — Reverse
Reverse · Photograph © 2026 Viking FinTech Trading LLC / Andrew Marlow.
Numismatic Coin

2006-S Nevada State Quarter — Silver Proof (PCGS PR69DCAM)

United States Mint (San Francisco)
SILVER 0.900 fine (90% silver, 10% copper) 6.25g 24.3mm

Real-world test coin — Andrew Marlow Nikon DSLR photography through PCGS slab. Demonstrates 100% VERY_HIGH confidence on Silver Proof numismatic coin. Slab holder detection: PCGS.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
American Gold Eagle — 1 oz Bullion Coin — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
American Gold Eagle — 1 oz Bullion Coin — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
Bullion Coin

American Gold Eagle — 1 oz Bullion Coin

United States Mint
GOLD 22k / .9167 fine 33.931g 32.7mm

Flagship US gold bullion coin. Demonstrates spot-price melt value computation (Au 0.9167 oz × spot), ORB feature matching against obverse Walking Liberty / reverse eagle design.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
American Silver Eagle — 1 oz Bullion Coin — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
American Silver Eagle — 1 oz Bullion Coin — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
Bullion Coin

American Silver Eagle — 1 oz Bullion Coin

United States Mint
SILVER .999 fine 31.103g 40.6mm

Most popular US silver bullion coin. 1986–present. Demonstrates Type 1 vs Type 2 (2021) design detection, melt value, OCR of UNITED STATES OF AMERICA text legend.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
American Gold Buffalo — 1 oz Bullion Coin (.9999 Fine Gold) — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
American Gold Buffalo — 1 oz Bullion Coin (.9999 Fine Gold) — Obverse
Obverse · United States Mint. Image in public domain (17 U.S.C. § 105 — US Government work).
Bullion Coin

American Gold Buffalo — 1 oz Bullion Coin (.9999 Fine Gold)

United States Mint
GOLD .9999 fine 31.103g 32.7mm

US Mint's only 24-karat (.9999 fine) gold bullion coin. Demonstrates pure gold identification vs 22K AGE, Indian Head / American Bison design matching.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Saint-Gaudens Double Eagle — $20 Gold (1907–1933) — Obverse
Obverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Saint-Gaudens Double Eagle — $20 Gold (1907–1933) — Reverse
Reverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Pre-1933 US Gold

Saint-Gaudens Double Eagle — $20 Gold (1907–1933)

United States Mint
GOLD .900 fine (21.6 karat) 33.43g 34.1mm

Pre-1933 US gold classic. Demonstrates historical coin identification — Liberty striding obverse, eagle in flight reverse. High-value lot due-diligence screening use case.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Saint-Gaudens MCMVII High Relief Double Eagle (1907) — Obverse
Obverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Saint-Gaudens MCMVII High Relief Double Eagle (1907) — Reverse
Reverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Pre-1933 US Gold — Trophy Coin

Saint-Gaudens MCMVII High Relief Double Eagle (1907)

United States Mint (Philadelphia)
GOLD .9000 fine (90% gold, 10% copper) 33.436g 34.0mm

Among the most sought-after and counterfeited US coins. CoinCheck Vision can flag visual mismatches between genuine ultra-high-relief pieces and imitations. ~11,250 struck. Estimated value: $35,000–$2...

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Morgan Silver Dollar (1878–1921) — Obverse
Obverse · Image: Wikimedia Commons (public domain).
Morgan Silver Dollar (1878–1921) — Obverse
Obverse · Image: Wikimedia Commons (public domain).
Classic US Silver

Morgan Silver Dollar (1878–1921)

United States Mint
SILVER .900 fine 26.73g 38.1mm

Most collected US coin. Demonstrates date/mint mark screening, key date identification risk flags, and Philadelphia/Carson City/New Orleans mint matching.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Walking Liberty Half Dollar (1916–1947) — Obverse
Obverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Walking Liberty Half Dollar (1916–1947) — Reverse
Reverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
Classic US Silver

Walking Liberty Half Dollar (1916–1947)

United States Mint
SILVER .900 12.5g 30.6mm

Iconic Adolph A. Weinman design used on the ASE reverse. Demonstrates design lineage matching and denomination differentiation.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
American Liberty High Relief Gold — 2015 ($100, 24K) — Obverse
Obverse · Image: United States Mint (public domain, 17 U.S.C. § 105) via Numista.
American Liberty High Relief Gold — 2015 ($100, 24K) — Reverse
Reverse · Image: United States Mint (public domain, 17 U.S.C. § 105) via Numista.
Modern Numismatic Gold

American Liberty High Relief Gold — 2015 ($100, 24K)

United States Mint (Philadelphia — no mintmark / West Point — W)
GOLD .9999 fine (24 karat) 31.108g 30.6mm

First in the US Mint's high-relief .9999 gold series. ~49,000 minted. Demonstrates high-relief design detection, 24K vs 22K classification, and premium numismatic identification.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
First Spouse Gold — Jacqueline Kennedy (2015, 1/2 oz .9999) — Obverse
Obverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
First Spouse Gold — Jacqueline Kennedy (2015, 1/2 oz .9999) — Reverse
Reverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
US Numismatic Gold — First Spouse Series

First Spouse Gold — Jacqueline Kennedy (2015, 1/2 oz .9999)

United States Mint (West Point — W)
GOLD .9999 fine (24 karat) 15.554g 26.5mm

Most sought-after coin in the First Spouse Gold series (2007–2020, now discontinued). Demonstrates specialist numismatic series identification and PCGS population data lookup.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
South African Krugerrand — 1 oz Gold (1967–present) — Obverse
Obverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
South African Krugerrand — 1 oz Gold (1967–present) — Reverse
Reverse · Image: © Heritage Auctions via Numista (numista.com). CC BY-SA 3.0. No modifications.
World Bullion Coin

South African Krugerrand — 1 oz Gold (1967–present)

South African Mint
GOLD .917 (22 karat) 33.93g 32.69mm

World's first modern gold bullion coin. Demonstrates international coin identification, Springbok / Paul Kruger design matching, 22K alloy vs .9999 classification.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Canadian Gold Maple Leaf — 1 oz (.9999 Fine Gold) — Obverse
Obverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
Canadian Gold Maple Leaf — 1 oz (.9999 Fine Gold) — Obverse
Obverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
World Bullion Coin

Canadian Gold Maple Leaf — 1 oz (.9999 Fine Gold)

Royal Canadian Mint
GOLD .9999 fine 31.103g 30.0mm

World's purest mainstream bullion coin. Demonstrates micro-laser security feature awareness, annual design changes, and 24K purity classification.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Austrian Philharmonic — 1 oz Gold (1989–present) — Obverse
Obverse · Image: © Münze Österreich Ag via Numista (numista.com). CC BY-SA 3.0. No modifications.
Austrian Philharmonic — 1 oz Gold (1989–present) — Obverse
Obverse · Image: © Münze Österreich Ag via Numista (numista.com). CC BY-SA 3.0. No modifications.
World Bullion Coin

Austrian Philharmonic — 1 oz Gold (1989–present)

Austrian Mint (Münze Österreich)
GOLD .9999 fine 31.103g 37.0mm

Europe's best-selling gold bullion coin. Demonstrates euro-denomination identification, Vienna Philharmonic instrument design matching, and weight verification flagging.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Queen's Beast — Lion of England (1 oz Gold, 2016) — Obverse
Obverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
Queen's Beast — Lion of England (1 oz Gold, 2016) — Reverse
Reverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
World Numismatic Gold — Collector Series

Queen's Beast — Lion of England (1 oz Gold, 2016)

Royal Mint (United Kingdom)
GOLD .9999 fine (24 karat) 31.21g 38.61mm

First in the Royal Mint's 10-design Queen's Beast series (2016–2021). Demonstrates collector series identification, heraldic design matching, and series completion tracking.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
🪙
World Numismatic Gold — Annual Design

Chinese Gold Panda — 1 oz (30g since 2016)

Peoples Bank of China / China Mint (Shenyang/Shanghai)
GOLD .999 fine (24 karat) 31.103g 32.05mm

China's flagship gold coin with annual design changes. Demonstrates year-specific design identification — key numismatic use case for Chinese collector market.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
Australian Lunar Series III — Year of the Dragon (2024) — Obverse
Obverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
Australian Lunar Series III — Year of the Dragon (2024) — Reverse
Reverse · Image: required via Numista. CC BY-SA 3.0. No modifications.
World Numismatic Gold — Lunar Series

Australian Lunar Series III — Year of the Dragon (2024)

Perth Mint (Australia)
GOLD .9999 fine (24 karat) 1.555g 14.1mm

Dragon year commands highest collector premium in any Lunar series. Demonstrates Perth Mint annual design identification and Chinese zodiac year classification.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
🪙
World Gold — Classic

British Gold Sovereign — Elizabeth II

Royal Mint (United Kingdom)
GOLD .9167 fine (22 karat) 7.988g 22.05mm

Most widely produced and traded gold coin in history. Demonstrates portrait-era identification (6 Elizabeth II portraits), St. George / Pistrucci reverse matching.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
🪙
World Bullion Coin

Mexican Gold Libertad — 1 oz (Winged Victory)

Casa de Moneda de México
GOLD .900 fine (22 karat) 34.533g 34.5mm

Mexico's official gold bullion coin. Demonstrates Winged Victory design matching, lower mintage premium identification, Mexican Mint product screening.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation
American Gold Eagle — 1 oz Proof (W Mint) — Obverse
Obverse · Image: United States Mint (public domain, 17 U.S.C. § 105) via Numista.
American Gold Eagle — 1 oz Proof (W Mint) — Reverse
Reverse · Image: United States Mint (public domain, 17 U.S.C. § 105) via Numista.
US Numismatic Gold — Proof

American Gold Eagle — 1 oz Proof (W Mint)

United States Mint (West Point — W)
GOLD .9167 fine (22 karat) 33.931g 32.7mm

West Point Proof AGE. Demonstrates proof vs bullion differentiation, key date identification (1995-W ~46k mintage), and W mintmark detection.

Demonstrates:
  • ORB feature matching
  • Confidence scoring
  • Risk flag generation

How CoinCheck Vision Works

Seven-layer identification pipeline — all on-premises

1️⃣
Image Normalisation

CLAHE contrast enhancement, grayscale conversion, 512×512 canonical resize — corrects for lighting, exposure, and angle variation.

2️⃣
ORB Feature Matching

2,500 ORB keypoints per image. Hamming-distance descriptor comparison with Lowe's ratio test. 75% of composite confidence score.

3️⃣
Numista Enrichment

Metal composition, weight, and diameter alignment adds 25% to confidence. Flags mismatches between claimed and catalogued specs.

4️⃣
OCR Text Extraction

Tesseract reads coin legends and slab labels. Cross-references expected text (e.g. UNITED STATES OF AMERICA) and flags mismatches.

5️⃣
Spot Price & Melt Value

Live gold/silver spot via licensed feed (goldapi.io). Computes melt value = troy oz content × spot price. 15-minute cache.

6️⃣
PCGS Enrichment

PCGS price guide, population report, and mintage data via PCGS Public API. Includes NGC cert lookup for graded slabs.

7️⃣
Risk Flags & Report

Flags: poor_reference_quality, ocr_text_mismatch, classifier_disagreement, low_confidence, single_reference_image. Exports PDF, DOCX, XML, JSON, CSV.

© 2026 Viking FinTech Trading LLC · www.VikingFinTechTrading.com · info@VikingFinTechTrading.com

CoinCheck Vision is a visual screening research tool. Not authentication. Not grading. Not financial advice.