Hi,
Just acquired a dbbl Sxs Non Ejector W.P.Jones damascus shotgun. The serial no is 13359. The action is Anson & Deeley box lock. The barrel flat also has a WR markings. I read somewhere, it can be of westley Richard as they were in making action & barrels. I have no idea on the manufacturing dates as these guns have few information on web. The barrel have provisional proof marks of birmingham (Like crown over V, 12/c and crown over bp)
There are no markings to say Nitro Proof & Not for ball.
The chamber are 2-3/4'' and barrel are 30''.

kindly help to find mfr year of this gun. Also I fired few nitro shells which fired quite well. The gunsmith gave a go ahead to shoot except the ball.