Watch List notes:

Greece, Constantine II (1964-1973), Pattern silver 1 Drachma, 1967, (KM Pn83). In NGC holder graded Mint Error AU 58 – struck on a foreign planchet. Extremely rare.

Ex. Baldwin\'s Auctions, Dmitry Markov Coins & Medals, M&M Numismatics, New York Sale XXX, 09/01/2013, lot 483.