I was shown a wakizashi that a antique collector had picked up some time ago. He did not know much about it but he was told it was from the mid-1600's by a swordsmith named Matsumora. I am interested in Japanese swords so I have been doing a little digging on it and could really use some expert assistance.
Basic info: Nagasa=38.3cm, Sori=0.62cm, Moto Haba=2.96cm, Saki Haba=2.18cm mounted in a plain wooden resting scabbard.
On the shorter side for a wakizashi, maybe a ko-wakisashi. Blade shape is Hira Zukari with a low peaked Ihori-mune. With a 26% taper and 2% curvature.
The nakago shape looks like funagata with a iri-yamagate jiri and visible file marks (sujikai style, I think). It has a mei, but just a 2 character one (no other stamps or symbols on either side). Looking at the Kanji, I am pretty certain it does not translate to "Matsumora". The first character seems likely to be "Mura". The second could be "shiro" or "nichi", or possibly a blocky version of "masa". I highly doubt this could be that "Muramasa" (the mei does not match known copies), maybe a forgery???
The blade is a light grey, with a masame hada, there appears to be a hamon, but, the blade has an overall hazy finish and needs a good polish (but I don't think it has been un-professionally done) so bit hard to see. There are some flaws: ware and some surface pits and light rust stains. My thinking is that it is real and could be mid-late 1600's but probably an "every day working sword" such as a merchant or craftsman might carry. That said, I could be totally wrong...!!
I can provide additional info and/or higher res. or different pictures (trying to keep under the posting limits) if helpful.
I am definitely an amateur nihonto enthusiast, so, any assistance is greatly appreciated.