I've seen a Tanto in shirasaya that interests me, maybe gimei...but I'm unsure whether it's a genuine Tamahagane. I only have these photos of the blade. I'd like an opinion. There are traces of rust (in spots), and the nagako looks good. The blade leaves me skeptical. But I could be wrong. Also, the era (it could be Meiji, assuming it's Tamahagane). I'm not linking the address out of respect for the seller.