In the way of an update, I went back and looked again, the gun was marked "Lindner & Co.". The action bore one proof mark that looked a lot like an early London proof mark with a V with something over it. I decided to pass when a cursory inspection through disassembly revealed what I believe were barrels off an American double (no proof marks) extremely crudely fitted to the action. Even if someone blew up the originals, they could have likely been salvaged through a sleeving job. However, some infinitely wise person decided to toss those and substitute a "new" retrofitted set. C'est la vie.
