Oooopa!!! Condor, you have one of a very few JW extra finish guns. I kept thinking there was something about that serial number ----. I don't have a valuation system for OQ Extra Finish; there are too few and they are generally too unique to find comparables in most cases. I know there is a 16 bore, (I think) a pair, and a trio of JW - EF. The JW - EF follows the embellishment pattern of your gun. You have one of, maybe, seven.

Here is hoping you enjoy it.

DDA