For sale is this very pretty, signed with the "M" inside a clam shell, Mikimoto sterling silver and cultured pearls brooch. It measures almost 1 3/4" x 1" and weighs 5.2 grams. It is set with one large & gorgeous 6mm Akoya pearl, four gorgeous 4.5mm Akoya cultured pearls and is in perfect condition. Please keep in mind that all Mikimoto jewelry items were hallmarked, none of the hallmarks were ever removed or covered up. This piece is an authentic piece of Kokichi Mikimoto jewelry.