Coinfinity Storage Solutions

Coinfinity offers a comprehensive range of storage solutions to protect and organize your entire precious metals collection. From raw coins to slabbed pieces and assay cards, we provide precision-engineered options for every need. Print only what you need or more as your stack grows. Stacker tubes, Storage Bins and Bases with NFC tracking.

Storage Categories

🔁 Coin Stackers

Perfect for raw bullion coins and rounds. Each stacker securely holds a specific coin size and supports NFC tracking and optional magnetic stacking.

Stackers

Supported sizes:

  1. 17.2mm Stacker — 1/10 oz coins
  2. 22.2mm Stacker — 1/4 oz gold
  3. 27.4mm Stacker — 1/2 oz gold
  4. 32.5mm Stacker — 1 oz gold
  5. 38.5mm Stacker — 1 oz silver
  6. 41.0mm Stacker — Silver Eagles
  7. 47.5mm Stacker — 2 oz Silver
  8. 52.0mm Stacker — Large Format

You can look at the Compatible Coins list to determine which coins will fit in each stacker size.

Model Files

  • 3D Models will be available soon on Makerworld! Makerworld

🧱 Storage Bins & Boxes

Organize slabbed coins, assay cards, and bullion bars with Coinfinity Bins. Each bin features an NFC badge slot and secure stackability.

Slab Storage Bin

The slab storage bin is UNIVERSAL! It holds slabbed coins from various grading companies:

  • PCGS Storage Bin
  • NGC Storage Bin
  • USCG Storage Bin
  • ICG Storage Bin
  • SEGS Storage Bin

Slab Bin

Assay Card Storage

Designed for credit card–style assay cards and compact bar formats:

  • Standard Assay Card Bin
  • Credit Card–style slots
    (Do not place credit cards here—the magnets can erase them! For assay cards only.)

Assay Bin

Bar Storage

For bullion bars of various sizes:

  • Bar Bins can store bullion bars or miscellaneous items.
  • Just a container, no side ridges or slots like the slab and assay bins.

Bar Bin

📏 Stacker Specifications

Size (mm) Cap Part # Tube Part # Fits Coin(s) Coin Diameter Typical Thickness Notes
17.2 C-17 T-17 1/10 oz Gold Maple Leaf, American Gold Eagle, Gold Panda, Gold Nugget 16–17 mm ~1.2 mm Compact, high-value storage for fractional gold.
22.2 C-22 T-22 1/4 oz Gold Maple Leaf, Britannia, Kangaroo, Panda 20–22 mm ~1.4–1.8 mm Compatible with the most traded 1/4 oz coins globally.
27.4 C-27 T-27 1/2 oz Gold Panda, 1/4 oz Silver Libertad, 1/2 oz Gold Kangaroo 27 mm ~2.0–2.3 mm Ideal for collectible Libertads and higher-relief fractionals.
32.5 C-32 T-32 1 oz Gold Maple Leaf, Krugerrand, Buffalo, Kangaroo 30–32 mm ~2.7 mm The standard for 1 oz gold bullion storage.
38.5 C-38 T-38 1 oz Silver Maple Leaf, Libertad, older Pandas, pre-2013 Silver Britannia 38–38.6 mm ~3.2–3.3 mm Fits most international 1 oz silver coins (non-US).
41.0 C-41 T-41 American Silver Eagle, post-2013 Silver Britannia, Silver Buffalo, various commemoratives 40.6 mm ~3.0 mm Perfect for U.S. collectors and large-diameter silver coins.

📦 Storage Bin Specifications

Type Part # Internal Dimensions Fits Notes
Slab Bin B-SLB 143.25mm × 65mm × 93mm NGC slabs Stackable, NFC-enabled
Assay Bin B-ASY 143.25mm × 65mm × 93mm Assay cards Supports RCM, PAMP, etc.
Bar Bin B-BAR 143.25mm × 65mm × 93mm Bullion bars Great for large-format storage

🛒 Purchasing Options

Each solution is available à la carte or in bundles.

  • STL files for personal 3D printing
  • Pre-printed stackers and bins
  • Accessory packs with bases and magnets

Shop now:

If you have trouble, you can reach out to the COINFINITY Discord server for assistance.

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