Japanese Gassan Sadayoshi, attributed blade and lacquer mounts, 19th century, the blade of 'hirazukuri (sunnobi tanto), hada' of 'ko-itame', temper edge of boxed shape 'choji' with 'ji-nie' and 'ashi', a carving of 'gomabashi' and a sanskrit character, 'ubu' tang with two peg holes, unsigned in a 'shirasaya', with an NBTHK 'hozon' paper, with a black lacquer 'saya' with iron 'mokko-gata tsuba' with decoration of foliage in gold 'nunome zogan', fitted with matching 'shakudo fuchi-kashira, soritsuno' and 'kurikata' decorated in flat gold 'zogan', with a kaga 'shakudo kozuka' decorated in flat gold 'zogan' with insects, the 'tsuka' cotton bound and with 'shibuichi' cranes 'menuki', the blade 31 cm long