In good condition, an unsigned Shin Shinto era Japanese Bohi Bladed Wakizashi (short sword).
This sword grows on you with its simple iron tsuba (guard), fisherman menuki (one on a boat, the other with his catch drinking saki) and moonlit ocean waves fuchi. OK, it has been mechanically sharpened / polished (buffed), but done well enough that you have to look to see; perhaps worthy of a professional polish. This slender bohi bladed wakizashi was probably for a merchant; it is almost certainly not a samurai sword. Bohi blades tend to be / reflect the better works of a blade maker, plus they lighten / balance the sword without affecting the blade strength.
The 22 5/8 inch Nagasa (cutting edge section) blade is in good condition, sharpened, buffed, a small amount of tiny ware (forging flecks). Furniture (fittings) in overall good shape. The black lacquered saya (scabbard) in good condition (typically longer than the sword blade). The sword sheathes and draws well.
A good bohi bladed wakizashi with what appears to be a very high quality blade for £850 ? Shakes head in disbelief! Please quote item reference number AF73. Further / full sized images available upon request. Triangle 1263-106×16 (1.252).