Vintage Japanese Peacock Pocket Warmer

Vintage Japanese pocket warmer. It's made of silver metal, and has a removeable lid. The vents on the top half are shaped like a peacock, and it has Japanese lettering one one side. There is some light scuffing on some of the metal, but no major dents, rust, or damage. The warming mechanism has signs of use, and the metal of the warming mechanism has some discolouration. 4 x 2 3/4 inches.