Oh, sorry, forgot to mention that. It is a new Solingen-branded razor. It's stainless steel (whatever that means). Check http://www.nippes-solingen.de/scheren/friseur.htm for a picture.

Funny thing is that I send it to the manufacturer who says it is very sharp and that I shouldn't try to hone it with a stone because "there's a honing device for that purpose".

Well, the razor seems to be fine, if a little warped or uneven on the other side of the blade but not much. I can see this by looking at which parts of the spine and the edge have wore out by honing. I can now shave arm hair with it which probably means I'm somewhere halfway.