Update: a rare 1 BTC Casascius coin from the 4K collection just sold for ~$150,000 (3.5x the peel price) on 4K
And welcomes Elias Ahonen as a Casascius coin authenticator, which means 4K is now accepting ungraded Casascius coins and bars to get authenticated and listed on the marketplace
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.ibb.co%2FGJzyFyV%2F01-Hero-2013-Silver1-Bitcoin-Casascius-Coin-ANACSMS70-1-Ag6-Ueai-Unpeeledand-Untampered-201300010-SL.jpg&t=665&c=AxkY1ltZYHjGQg)
4K is protocol that enables people to bridge physical assets across digital and analog worlds. By securely storing physical assets and issuing non-fungible tokens (NFTs) that are redeemable for those assets, 4K’s blockchain-based marketplace empowers anyone to seamlessly and confidently buy and sell authenticated assets.
Looking to sell your coins and/or bars? Get in touch with us.