A JAPANESE KATANA (LONG SWORD), 1750-1800, Sugata (configuration): shinogi-zukuri (longitudinal ridge line), with a deep tori-zori (even curve) and long kissaki (point), gilded copper habaki (collar); Hamon (tempering pattern): notare (undulating), details partially obscured by rubbing; Nagasa (length): 62.0 cm; Nakago (tang): ubu (unshortened), one mekugi-ana (peg-fixing hole), mumei (unsigned); Koshirae (mounting): plain black lacquered saya (scabbard), blue silk itô (braiding) wrapped tsuka (handle) over same (rayskin), with a pierced gilded copper alloy tsuba (sword guard) and gilded fuchi-kashira (hilt collar and pommel)