This is a hand-made replacement bridge in rosewood, and bone, in the style of the Japanese Suzuki bowlback mandolins. It has a characteristically 'sharp' saddle top.
It is 115mm long,15-20mm tall before fitting, and 6mm wide, tapering at the top. The bone saddle is approximately 50mm long. The spread of string slots is 38-40mm. It will suit required bridge heights of 10-15mm.
It may need to be fitted, if there is any doming to the top, as it comes with a flat foot. String slots may be omitted or altered if required.