Scarce City

Casascius 2011 Brass 1 bitcoin Coin

by Mantis Cryptos

Winning Bid

0 sats


by Someone

In 2010, Mike Caldwell had the idea of buying a few hundred small metal washers and placing tamper-proof holograms on each side to secure a bitcoin private key inside.

He created the Casascius coin which went on to inspire hundreds of physical bitcoin representations.

This is a series 2 1.0 BTC Casascius Coin

1,644 recorded editions of this series were minted making it the most rare series among any brass 1.0 BTC or 0.5 BTC coins. The actual edition quantity is slightly higher than what's recorded since a few coins were funded in 2012. This is one of the few 2012 funded series 2 coins.

Coin Details

Reserve Price: 1.0 BTC

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1,000,000 sats ($0.00) minus your previous deposit(s)



Call the high bidder’s bluff by bidding below them. If they don’t pay the bid amount, you’ll win the auction.

Bidder NameAmount (in sats)Time & Date
Someone140,000,000 (1.4 BTC)August 22, 2021 7:31:14 PM UTC
JuanPaco130,000,000 (1.3 BTC)August 20, 2021 8:56:51 PM UTC
HansVerified120,000,000 (1.2 BTC)August 20, 2021 8:40:03 PM UTC
Satosho Nakomoti110,000,000 (1.1 BTC)August 20, 2021 8:37:16 PM UTC
HansVerified100,000,000 (1 BTC)August 20, 2021 7:09:32 PM UTC

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2. The winning bidder has 4 hours to pay their final bid. If they don't, they lose their deposit(s) and the next highest bidder has a chance to pay their high bid.

3. Once all event items are paid for, deposits are refunded to the remaining participants.

Complete Details


  • Bids placed in the final 10 minutes of the auction reset the countdown to 10 minutes
  • Auction can't end with a pending bid
  • Onchain bid deposits no longer accepted


Buyer has the option to pick up the coin in person in Tampa, Florida

  • US: $30
  • International: $60

A shipping deposit of $60 is added to the winning bidder's final balance. Once the item ships, the difference is returned to them along with the shipping receipt.




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