I just received a 12 gauge double made by J P Sauer. It has a polished nickel receiver and the words Fluss-Stahl on the left barrel and the words Krupp-Essen on the right barrel. the words are right at the chamber end and roll printed on the circumfrence. The wood is of a high grade and with checkering on the grip and the beaver tail forearm. The fit and finish of this piece is remarkable and I am itching to find out the value, age and model of this shotgun. Any help is appreciated.