Tanto...but Is this tamahagane?

[sc72]

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.

[sc72]

[sc72]

[ROKUJURO]

Stefano,

a nice OSORAKU blade! They were often made in SHIN-SHINTO era as revival pieces.

Could we see the NAKAGO please (not Nagako !)?

How do you want to determine if it is made from TAMAHAGANE unless you can see a clear HADA (which is not a guarantee but a greater likelihood)? There are spectroscopic methods to get a precise steel analysis.

[sc72]

What leaves me perplexed is that ...from the photos... the metal looks (like that of industrial gunto swords) without the metal having any activity.

[Lewis B]

I wonder if there has been some acid etchant used or other shenanigans to augment the features.

[sc72]

me too

[Trenchnut]

Never go against your guts Stefano. 

[sc72]

signed "Yoda" (Star wars)

[Lexvdjagt]

Can we get an image of the full Nakago?

[Lewis B]

Seller appears to be the same guy behind Komonjo or at least affiliated with him.