Im looking for information on a Simson 12 gauge side by side shotgun. On the bottom of the receiver is an engravement of a standing duck with reeds and the word Simson, on the side are the words Simsonwerke- Suhl. On the underside of the barrel is, 13/1 with a 12 in a circle, 70mm, Nitro 534. There is also a U with a crown above it, Suhl in a circle, W with a crown. The serial # is 36902. On the top of the barrel are the words FLUSS-STAHL KRUPP ESSEN. The gun is in goog condition it shoots well and the stock has no cracks or damage. It has a rubber but pad on the stock which says Pachmayr Gun Works Los Angeles, Calif. The but plate could be aftermarket unknown though. The graving is in good condition but it appears as if someone attempted to turn the screws on the side and marked them up a little. The blue on the gun is mostly gone and the end of the barrel is a little pitted. It has what appears to be the original bead on the tip of the barrel. Could any one give me information on this gun, year, marks, and a ball park value?