Gavin Gardiner’s Spring Fine Modern and Vintage Sporting Guns sale on April 18th. I poked through the catalog and pulled out a few lots for a further look. Here’s the first one that caught my eye.

Lot 178: Boss & Co., 12-bore single trigger assisted opening sidelock ejector, No. 6364
Catalog info: 29-inch replacement barrels by the maker (no. 9995), with 2 1/2-inch chambers, about 1/4 and 1/2 choke boring, the frame, locks and gold numbered top lever with fine bouquet and scroll engraving and retaining traces of hardening colour, gold lined cocking indicator, rolled edge trigger guard, 14 1/4-inch well figured replacement stock, 6lb. 11oz., nitro proof, lightweight leather case with reproduction label. The maker confirms that the gun was rebarelled in 1988 and restocked at the same time. Bores/walls: Rt: 729/28 & Lt: 729/28. Estimate: £16,000-20,000
Pros: Original gun was made around 1915 (a good period for Boss) and the new barrels and stock were done by Boss. The barrels are modern and they have excellent measurements.
Cons: Some parts probably reblacked and the forend was probably refinished . The case isn’t original. Estimate seems high. Also, the auctioneer has left out a lot of important info and the pic shown says very little about the gun.
Another thing, this side-by-side shotgun is not an “assisted opener”. Boss never mad assisted-opening shotguns. The auctioneer is referring to a by-product Boss-patent ejectors. Because of the way these ejectors work, the luggers (I think that’s what they’re called) press against the face of the action. This force helps open the gun a bit- when the gun is cocked. After the gun has been fired, the ejectors do not do this and they have no effect on the opening of the gun.
BTW: before you think these guns are fantastic deals, consider this that when buying in the UK, you should double whatever you’ll pay in £ and add 5-10% to get a good estimate your total costs in $s.