It isn't really clear what the inscription indicates. On the reverse side of the handle it has the initials R.
It is either related to a Panzer Regiment or to a tank manufacturers. PLEASE NOTE: I have taken pictures showing what its actual purpose is (a letter opener) I have also taken a photograph showing its length, again, indicating its a letter opener. Item is made of brass and brass is a soft metal, not a metal you commonly see on genuine offensive weapons. There are pictures from every angle, which shows that this has no offensive symbols or text. Condition report: some wear, marks, surface scratches and the tip is blunt.
See my other militaria currently for sale and I add new items on a regular basis. This item is in the category "Collectables\Militaria\World War II (1939-1945)\Other World War II Militaria". The seller is "derwent_antiques_uk" and is located in this country: GB. This item can be shipped to United Kingdom.