Here is a Rigby from Bonhams last auction.

http://www.bonhams.com/cgi-bin/public.sh...SaleSectionNo=1

Lot No: 244S2
A 12-bore sidelock non-ejector gun by John Rigby & Co., no. 15806
The toplever and rib numbered '2' in gold, the action incorporating the Rigby-Bissell rising third-bite, patent use number 369, dipped-edge lockplates, fences carved with stylised acanthus leaves, best bold foliate-scroll engraving, well-figured stock (possibly a replacement) with leather-covered recoil-pad, lever-latch forend, the sleeved barrels (slightly loose on action) with game-rib engraved John Rigby & Co., St. James's Street, London & Dublin
Weight 6lb. 13½oz., 15in. pull (14in. stock), 29½in. barrels, approx. I.C. & 5/8 choke, 2½in. chambers, Birmingham nitro proof

Sold for £1,380 inclusive of Buyer's Premium




It is in proof. So it does not exactly fit the original question, but all the chatter about sleeved and restored, I thought this example interesting.

Pete

http://www.damascus-barrels.com/Movie.html