value on jp sauer and sohn

I am looking for a ballpark value on a side by side 12 gauge shotgun.I believe it was manufactured in 1895.It has the numbers 56982 on it.It has engraving all over it.Internal hammers and the marking DRGM17913 on both sides next to the safety switches.It also has the markings of a crown over s and u and w.Any help would be appreciated.Thanks!