This is a tsuba (sword guard) my father purchased in 1970. A note was included stating "Akikusa Shakudo" (Autumn Grass Shakudo) and a value of 35,000 yen (see photo). It has a slight reddish tint, so I believe it's made of copper, as the note suggests, but I'm not certain. Please judge from the photos. Width: 5.8 cm Height: 6.3 cm Thickness: 4 mm Please note that these are approximate measurements.