ID a damascus barrel Belgian shotgun

I have a Belgian damascus barrel shotgun my grandfather bought in Minnesota a LONG time ago. It is 16 ga w/ 2 1/2 inch chambers, doublr hammers/double triggers, with a English style stock with a horn buttplate and splinter forend. The name Jules Gervais is on the left lock and the name A. Anvers is on the right lock. It is tight, and nicely engraved and what little brown finish is left is under the forend. I have made and shot 2 1/2 " blackpowder shells in it, and is sweet to shoot. I'm certain a majority of Belgian gun records were lost in two world wars, but am hopeful that some knowledgeable shotgun person out there can give me a clue as to where it was actually made and approximately what year. Thanks, F G Farrell

hi southwind,
this is what i found on your shotgun. there's a pic at this link also.

http://www.ivorybeads.com/site/default.asp?Page=54& FSL3_SL_8=european&FSL3_RUNSEARCH=TRUE&FSID3=2169



Gun Details

#4035 - Jules Gervais Best Quality Belgian Sidelock Ejector Gun SxS, 12 ga.
Finely made and high quality Belgian sidelock ejector gun. Gun is marked, Jules Gervais - A Anvers on floor plate. Belgian proofmarks on barrel flats. Excellent condition with 99% original barrel blue. Solid raised rib. Bores are perfect. Chambers have been professionally lengthened to 2 3/4". Actions showing traces of case color with lovely old patina. Fully engraved with exquisite rose & scroll. Double underbite and third fastener. Double trigers, front articulated. Auto ejectors. Splinter forend and straight grip stock are of finest Turkish Walnut. Dropper points and checkering are perfect and very well done. 3/4" red rubber pad. Weighs 7 lbs. 14 oz. Comes in green canvas & leather after-market case. A most wonderful and highest quality European sidelock gun for a modest price!
Barrel Length 29 5/8"
Chokes Mod/Full
Length of Pull 13 1/2"
Heel 2 3/8"
Comb. 1 1/2"
Price $7,295.00

hope this helps, very nice shotgun indeed.
Kim