Etched Blade

What cutlery has two “asian” symbols etched in the blade?

I was given a set of three knives and was looking to find a few more. these seem to be very nice knives. there is three rivets holding the handle to the knife. the symbols are formatted one on top of the other and are on the blade.

Im not positive without a pic, but ifthey are a higher grade, perhaps a ginsu original?

Jon P. Moore – Etching A Damascus Blade With Acid