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Series 1 Second 1 BTC Casascius Physical Bitcoin

Winning Bid


1.35 BTC


Auth code will arrive by email and can take up to 10 minutes.

A $400.00 deposit will be added to your final bid to cover shipping costs and applicable sales tax. Once the actual cost is known, you will be refunded any remaining funds by email.


May 20, 2023 5:43:48 PM UTC

135,000,000 sats

1.35 BTC

Linear Trav
May 20, 2023 5:37:09 PM UTC

122,500,000 sats

1.225 BTC

May 20, 2023 5:32:45 PM UTC

120,000,000 sats

1.2 BTC

One uncirculated Second Series 1 1 BTC Casascius physical bitcoin (S2-COIN-1-2012) with public address 1Caa1qumVMTJWpxPDpytyDjY9gcJ4UeSsG

The Series 1 Second coins are the coins with the transparent window in the hologram through which the firstbits can be seen.

Find out more about Casascius Physical Bitcoins here:

These coins were minted prior to any Bitcoin hard forks, therefore the private key stored within not only controls 1 BTC of value, but also 1 BCH (Bitcoin Cash), 1 BTG (Bitcoin Gold), 1 BSV (Bitcoin Satoshi Vision), 1 BTD (Bitcoin Diamond), and 1 of any other current or future hard forks of the Bitcoin blockchain or any of their derivatives. Not to mention, it's a really neat looking coin.

This coin's address has had an additional 0.00000001 BTC sent to it from some satoshi "dust spam" marketing attempts on three different dates:

Jun 22, 2015 at 14:27 a33fefbbfe6c400515988f20e9a244507e306217ea76b2fbcaf84b2cb3e4eeef

Apr 1, 2017 at 22:02 e258e018cdf8205f1955bc90e2ef5a7c9171dffde9dc4c0a909d00474e0341ec

Apr 1, 2017 at 22:15 145167b04b8327fdb897f315e3fb51b9f5c8a8e53b9ac70f023736e86ef97c6f

Details of the satoshi spamming marketing attempts can be found here:

Casascius Coin tracking information:

Proof of Stored Value:

To verify any stored value on any other forked Bitcoin blockchain, simply search for the public address 1Caa1qumVMTJWpxPDpytyDjY9gcJ4UeSsG in that chain's block explorer.

Starting Reserve Price: 1.2 BTC (120,000,000 sats)

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