Quote Originally Posted by draitzer View Post
Pre-1900 there were a couple of Theodor Bergmann cast-iron pistols, but I suspect what you refer to is some version of the self-contained shooting gallery gun as posted by Garvin. I have run across two of these that were really pre-war Diana 5's with a mounting lug under the barrel, and that weird tubular sight.
Good Day Draitzer, Thanks for your input & time most useful. AirMad.