Cryptic Coffer. Burnsville, MN: Cassini, ca. 1978. A Seven Keys to Baldpate variant. Spectators choose any keys from a group and none will open the locked cabinet – the magician always chooses the correct key to unlock the check (or can allow any spectator to open the box at will). Black walnut chest with inlaid accents, brass hardware, and Egyptian-themed pewter decoration to lid. 9 ½ x 7 ½ x 6". Complete with keys and gimmick; electronic mechanism working but may require adjustment. One of 12 manufactured.