This is a tsuba, a sword fitting for a Japanese sword. I believe it is made of copper. The characters "石黒" (Ishiguro) are carved on the tsuba. I believe this is a signature, but I am not certain. Details are unknown, so please confirm and make your own judgment. Condition: Possible stains, age-related deterioration, and signs of use. Thank you for viewing. #Tsuba #Weaponry #SwordFitting #JapaneseSword #Crafts