A Sukekuni Shinto KatanaSamurai sword in koshirae DATEEarly Edo period, circa 1660CERTIFICATENBTHK Tokubetsu Hozon TōkenNAGASA [lenght]: 69.4 cmMOTOHABA2.4cm SORI1.6 cmSUGATA [configuration]: shinogi-zukuri, tori-zori, iori-mune, enlongated chu-kissaki (4,5 cm)KITAE [forging pattern]: thick ko-itameHAMON[temper line]:dai gunome midare mixed with choji midareNAKAGO[tang]: O-suriage (shortened about 8cm) with original Sujichigai Yasurime file marks and newly added Kiri yasuri on the suriage part; two mekugi-ana MEI...