I'm about to inherit this J.P. Sauer SxS. I'm wondering if any here can help me to identify it or figure out its approximate value.

Here's What I know

J.P. Sauer and Sohn.
Made in Germany. I think 1963?
12 Guage, 2 3/4" , Full Choke / Half Choke
Serial # 286XXX





I know some of the pics aren't great.

The barrel is over 90%, perfect bluing, shiny bore. Action locks tight. Stock in good shape, ~80%, no major dings or dents. Has woodland scene on side of case, original, no rust. (Don't know if I should clean it or not, has some tarnish)

Hope you folks can help me out.

Thanks