Set of three bronze stamps.

20th Century. Three elongated bronze seals in a box of the same material. On the front is engraved a "ying-yang" symbol. 

Size: 3,30 x 3,90 x 5,70 cm; Unit size: 2,70 x 1 x 4,90 cm; Box height: 2,10 cm; Total weight: 446 g.