CoinDesk
A rare Casascius Series 1 25-BTC physical coin, minted by software engineer Mike Caldwell between 2011 and 2013, was peeled this week and its 25 BTC — worth roughly $1.78 million at the redemption price — swept on-chain to a new wallet. Galaxy Research flagged the move, recorded in Bitcoin block 952,159, from the coin's printed address 1tLPQwd6wjvZpreivwHsEuU2ceSv6zaon. The S1-COIN-25 designation identifies the piece as part of the original mint run that predates FinCEN's 2013 enforcement guidance to Caldwell, after which production halted.
Why it matters
Cashing in a Casascius is a one-way trade. Each coin embeds the private key for its face-value bitcoin under a tamper-evident hologram; once peeled, the artifact loses its collectible status and the holder is left with plain BTC. Intact Series 1 coins in larger denominations typically carry a numismatic premium over their face bitcoin value, meaning the holder effectively traded a higher-priced collectible for the underlying asset — a decision the redeemer made voluntarily, but one that collectors will read as a price signal about how intact examples are valued relative to spot.
Market impact
The redemption is small in dollar terms but arrives during a stretch of unusual activity at the dormant end of Bitcoin's UTXO set, including a separate 2011-era wallet that moved 35 BTC this week after roughly 15 years of inactivity. The combined effect is more archaeological than directional: neither move cleared meaningful sell pressure, but both reinforce that the early-mint supply, much of it locked in physical coins, remains a slow-release tail. Of the roughly 20 Caldwell-minted 1,000-BTC Casascius pieces, most are still intact and now represent the equivalent of around $66 million each in face value alone.
Frequently asked questions
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What is a Casascius physical bitcoin?
A Casascius coin is a physical token minted by software engineer Mike Caldwell between 2011 and 2013 in denominations from 0.5 to 1,000 BTC. Each piece embeds the private key for its face-value bitcoin under a tamper-evident hologram on the back, and the receiving address is printed on the front.
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How much was the redeemed Casascius coin worth?
The S1-COIN-25 held 25 BTC, worth roughly $1.78 million at the redemption price. Intact Series 1 coins in larger denominations typically command a numismatic premium over face value, meaning the coin may have fetched more if sold intact to collectors.
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What happens when a Casascius coin is peeled?
Peeling the hologram exposes the private key, allowing the holder to sweep the bitcoin into a wallet. The move is irreversible: the physical artifact loses its collectible status and the holder is left with plain BTC rather than a premium-priced collectible.
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Why did Mike Caldwell stop minting Casascius coins?
Caldwell halted production in late 2013 after the U.S. Financial Crimes Enforcement Network advised him that minting the coins constituted operating as a money transmitter without a license.
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Are there still unpeeled Casascius coins left?
Yes. Trackers show thousands of Casascius coins across all denominations remain unredeemed. Fewer than 20 of the 1,000-BTC denomination pieces were minted, and most of those are still intact, each now representing roughly $66 million in face bitcoin value.
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