Copyright © PeerMetals 2026
Sigma Verified Seller
Device verified for accurate precious metals testing
Ready to Ship
Dispatched Within 2 Business Days After Payment is Confirmed
Secure Purchase Guarantee
100% Money-Back Assurance for Peace of Mind Learn More
| Weight | 4 oz |
| Quantity | 5 |
| Mint/Brand | K2BX |
| Country | US |
| Metal Type | Accessories & Supplies |
| Category | Exonumia |
| Sub Categories | ForeignModern CollectiblesOther Coin & Money Supplies |
Give your copper collection a home of its own.
Made in the United States, this K2BX 3D printed storage box holds up to ten 5 oz copper rounds in compatible standard capsules. Individual slots keep your rounds upright, separated, and easy to browse, while the black exterior and contrasting K2BX and CU markings complete the look.
Strong magnetic closure. Easy access.
Four corner magnets keep the removable lid firmly seated. The hold is impressive: in our demonstration, we lifted the loaded box by its lid with ten 5 oz rounds inside—50 ounces of coins—and the magnetic closure kept the base attached. Yet the lid remains easy to open when you want to enjoy your collection.
Product highlights
* Ten individual slots for encapsulated 5 oz copper rounds.
* Removable lid with four strong corner magnets.
* Black box with contrasting K2BX branding and CU marking.
* 3D printed in the USA.
* Includes one storage box and matching lid.
Box only. Coins and capsules shown in the photos and video are not included.
Capsule sizes vary by manufacturer; fit depends on the capsule’s outside diameter and thickness. Visible print lines and slight surface variations are normal characteristics of 3D printing.
Support the base when carrying a loaded box. The magnetic demonstration is not a rated lifting capacity.
@k2bx
251
Sold
7
Reviews
18
Followers
66
Listings
7940 Metal PointsLoyal Customers
Trusted by repeat buyers across PeerMetals