Watch List notes:

Japan, Tenpo, Bronze 100 Mon, 1865, Ko Kaku type, bosen, 'seed' or mother coin, Obv: Japanese legend "Ten-Ho (Tempo) Tsu-Ho", square hole in the center, Rev: Japanese legend "To Hyaku (value 100)", 21.71g, 49.01x32.45mm, (KM # C7), about extremely fine, Rare.