Ivanhoe has kindly provided scanned images from Southams auction catalogues. Here are some pinfire game guns, to add to the guns already pictured in this thread and to our collective knowledge. Unfortunately, the catalogues do not list much information, but it is something. Some lucky persons now have these in their collections!

12-bore signed Robert Watmough of Manchester, 30" barrels:
[Linked Image from i.imgur.com]

12-bore signed Richard Jeffery of Guildford, 30" barrels:
[Linked Image from i.imgur.com]


12-bore signed Henry Tatham of London, 30" barrels (twist?). A fine looking gun with border engraving; Henry Tatham died in 1860 and the business closed then, so this is an early gun with the Beringer-inspired rearward-facing underlever, presumably with a single bite.
[Linked Image from i.imgur.com]

12-bore signed Westley Richards, 30" barrels. This is gun No. 11146, number one of a pair, completed on 6 October 1865 for Lord Mahon. Both the lateral top lever and the fore-end are numbered "1". It has the 170 New Bond St. address on the rib.
[Linked Image from i.imgur.com]

Thank you, Ivanhoe!