From the 1960’s this “C. Clay” card is extremely rare, perhaps even the rarest. It is unknown whether this was ever issued en masse or is a proof of sorts. The picture of Clay is nearly identical to the Italian “Lampo” Sticker no. 154 from the 1960’s. The bald man in the background’s identity is a mystery. Condition is VG with a crease at the upper left corner. Blank backed.