An antique Japanese army sake cup, decorated with a flag of the signal unit, with a battery insignia on the left and some wires on the back with two Chery blossoms. The words are “1st Signal Unit Regiment” and the back of the cup is shaped like a helmet with three shells as the base, and the characters “Loyalty and Bravery” embossed. The soldier’s name Yamakawa is also on the back. Size, 2″ in diameter.