Description
Organize Your Stack with Smart, Modular Precision
For the modern bullion investor and precious metals collector, storing minted bars in their original assay cards is essential for authentication and liquidity. But drawer clutter, bending cards, and lost inventory records are a thing of the past.
Enter the Coinfinity Assay Card Bin—a purpose-built, collector-grade storage solution designed to protect, display, and digitally track your 1 oz gold, silver, platinum, and palladium bars. Whether you are organizing a vault, a home safe, or a desktop display, Coinfinity brings professional-grade organization to your physical assets.
🛡️ Precision Protection for Your Bullion
Engineered specifically for standard 70 × 148 mm assay cards, this bin ensures a snug, secure fit for major refiners like PAMP Suisse, Valcambi, Perth Mint, and Sunshine Minting. No more sliding, bending, or loose storage. Your sealed bullion stays pristine, protected from dust, and ready for professional display. The precision-cut PETG construction ensures your cards lay flat and secure.
📱 Smart NFC Inventory Tracking
Every bin comes equipped with an embedded, writable NFC chip. Simply tap your smartphone using the Coinfinity Tracker App (available for iOS & Android) to instantly log, identify, and track the contents of your bin.
- Instant Read/Write: Update your inventory in milliseconds.
- Privacy First: Unlike other digital inventory systems, the Coinfinity app requires no user account, no cloud uploads, and no data harvesting. Your physical stack and its data remain 100% private and locally on your device.
🧲 The Modular Coinfinity Ecosystem
Built with embedded magnets in the base, the Assay Card Bin is designed to snap securely to Coinfinity bases or stack cleanly with other bins. Whether you have 5 bars or 500, the Gridfinity-inspired Coinfinity system grows with your collection, allowing you to mix and match bins for slabs, raw coins, and loose bars.
⭐ Key Features & Benefits
- Exact Precision Fit: Custom-sized internal cavity (70 × 148 mm) perfectly fits standard 1 oz credit card-sized assay cards.
- High Capacity: Easily holds up to 15 assay cards per bin.
- NFC-Enabled: Built-in smart chip for tap-to-track digital inventory management.
- Magnetic & Stackable: Snaps perfectly into the modular Coinfinity ecosystem for a rock-solid, organized setup.
- Durable Build: 3D printed from high-quality, rigid PETG plastic that is heat-resistant, non-reactive, and built to last.
- Collector-Grade Aesthetics: Sleek, clean lines designed by collectors, for collectors.
📏 Technical Specifications
- Internal Dimensions: 70 × 148 mm
- External Dimensions: 2.76″ L x 5.83″ W x 5.83″ H (7.0 x 14.8 x 14.8 cm)
- Capacity: Up to 15 Standard Assay Cards
- Material: Premium 3D-Printed PETG Plastic
- Included in Box: 1x Assay Card Bin, 1x Lid, Embedded Magnets, Embedded NFC ID Chip
- Colors Available: Matte Black, Matte White
🥇 Perfect For Storing:
- 1 oz Gold & Silver Minted Bars
- Platinum & Palladium Bullion Cards
- PAMP Suisse, Valcambi, Perth Mint, Sunshine Minting, and more.


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