S1 500 BTC 2011 Bar

Considering that only one of these bars remain in an un-redeemed state, it is possible that it will fetch the highest amount over face value compared to any other Casascius item if it is ever sold.

Unlike the normal series 1 first-bits that are printed on the hologram with an ink-jet printer, this bar has them added on with a laser to ensure that the first-bits cannot wear off or be erased. In addition, there are two laser engraved ‘500 BTC’ markings on the hologram, with the same marking appearing in ink below the hologram on the bar itself.

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