Below is the product information the Aocs mint has listed with these copper "style" bitcoins . http://aocsmint.com/copper/2012-copper-1oz-mjb-monetary-metals-bitcoin-tube-of-20oz.html
The intricate circuitry design of this medallion brought to you by MJB Monetary Metals perfectly expresses the currency of the digital age:
The Bitcoin concept was created in 2009 as a completely digital currency. It exists as a decentralized form of money that can be transferred from person to person over the internet, without going through a bank or clearinghouse. The amount is not limited and the transfer fees are minimal. The total number of bitcoins is permanently set with a calculated release. So, as time goes on, they are released at a decreasing rate until the maximum number of 21,000,000 is met, meaning there is never inflation after the fact.
The AOCS is proud to take the concept of Bitcoin to the next level by having the currency concept minted in .999 fine, investment-grade copper. On the obverse of this commemorative medallion, the Bitcoin symbol is positioned prominently in the center, bordered by a description of the currency’s key features: digital, decentralized and peer-to-peer.
On the reverse, the fancy, detailed paths of the circuits continue. A computer chip with “AOCS Approved” and “MJB 2012” etched within is well placed on the left-hand portion of the coin.
All text on the coin in written in a style with a high-tech, futuristic feel, allowing the coin’s specifications to blend in well with the overall theme.
This medallion is the perfect tangible representation of the technologically advanced currency, as well as a fine addition to your precious metals assets.