I have an old German made .22 cal single shot rifle, there are no names on the rifle except the letters D.R.P. which I have always thought would stand for German Replublic(maybe East Block Germany). The action is a trap door style single shot and there are 2 places withe the emblem of an animal with a tail turned into the letter "S". It is on the trap door part and looks to be burned or embossed in the stock. The pictures may help you better to understand the markings. Any information about this gun would be greatly appreciated.