Not trying to highjack the thread but was asked about an Aubrey recently and I had little (next to none!) info to offer to the fellow other than some history I could remember from some previous postings here.
Is there any way to ascertain the grade of the gun from the engraving decription?
He said his 12ga SxS has a pointer on both lock plates and a goose on the bottom. Some scroll engraving to compliment it from the sounds of his description. 
He said there was a 'D3' on the table but didn't recall any other markings there other than the ser# and he didn't have that memorized.
I'll hazard a guess that the D3 is actually a D30 for Damascus 30" from reading the website info. He did say it had 'damascus' barrels, though that would be his description of anything composition. He said it had a burl walnut stock also.
I will try to get more info from him on the gun re: markings, #, Bbl length, etc.
Great info on the Damascus-Barrels.com site and a very nice Aubrey to start this thread!