I already told you my thoughts on this knife in "Forum Help" section a couple of days ago. Puma used several makers marks on these knifes and a couple of different blade styles. Those styles being a "clip point and a "dagger". Yours is the "dagger" style.
I have since researched several more examples online, looking at all of the fine details of construction and the riccasso area, where the makers mark is stamped. Although I have yet to find one without any marking, there were a few with the marks so light they appeared unmarked. It would not be unheard of for a Puma to be unmarked, although uncommon.
I also looked at several reproduction Pumas. They lacked certain little fine details of construction that an original Puma has. Yours has those details as exhibited on an original Puma. If it is a reproduction, it is a good one and collectors beware.
I could go on with this response, talking about the scabbard or the grips and the correct construction they exhibit but, this would be a longer response than needed. It`s your knife, best to educate yourself about it. Spend a few hours researching as I did.
Now as Andy said, here are experts, and I think Andy is one of those experts. He did not give your knife a negative response, that means something to me.
It`s always good to get a second opinion and hopefully more experts will respond.
Now if you decide this knife is a reproduction, I would be happy to buy it from you, at a reproduction price.