Experts' opinions needed. I've bought this Japanese razor on eBay recently, and it cost significantly less than anything made of Tamahagane would. So I don't expect it to be that good. Seller did not make such a claim himself, still, the razor has markings on it saying Tamahagene in kanji - 玉鋼 (at least that's what I'm seeing). Apparently, the seller sees the same: he has put this explanationary picture of what those markings mean:


As you can see, he considers Tamahagane to be a brand name. So, what I'm asking is: could that be right? It just seems a little doubtful to me that "Tamahagane" is available to register as a brand name, for as such it sure could be misleading.

Here's a closeup of the stamped side:

[the razor has not arrived yet, so I can only provide you with these pictures made by the seller]

Any suggestions are much appreciated.