Watch List notes:

USA, Bitcoin, Casascius physical bitcoin, dated 2011, brass, obv. B, around 1 BITCOIN, in field VIRES IN NUMERIS to left, to right, 2011, rev. holographic design with unique code, the word "CASACIUS" in error repeated in field. Extremely fine and extremely rare.

This piece is part of the first rare issue of physical Bitcoins produced by Bitcoin user Casascius in 2011. It cointains an embedded piece of paper with the digital Bitcoin value. The unique serial number is printed on the reverse and it has not been redeemed. With research.