They were made by hand in Amita, at the turn of the Meji and Taisho eras. The bases for the clips were most likely created from layered sheet steel (similar to how samurai blades were forged), and were then gilded. "The heart" of each pin is a black enamel-filled oval with insets of 24K gold, engraved, and hand-painted silver and gold on black enamel. The ovals feature classic views associated...