I have a 10 Bore E M Reilly double rifle 28" Damascus barrels, weight 13 pds 3 oz. Underlever hammer non rebounding hammers fully engraved. serial number 16585. Stamped on bottom of barrels EMR and on the bottom rib L1963. barrels engraved E M Reilly & Co Oxford Street London & Rue Scribe Paris.
I also have an 8 Bore E M Reilly underlever hammer double rifle. Rebounding hammers serial number 30245. E M Reilly engraved on lock plates, no engraving on barrels, although the address could have been polished off as the damascus barrels were rebrowned in England. Border engraved, groove diameter .8354. case length 3 1/4"
Twist about 52" weight 16 pds 8.8 oz.