I'm pretty sure the "Tobins" got into work that made serious money, like wood stoves-they were Canadians, "eh".
Rare, you got right. Valuable, well, not in this lifetime. I should mention that a spare trigger about the homestead here righted the wrong of reversed firing, not for any good reason I could think of, save it seemed wrong.
Lets imagine that the early in the past century factory worker was in a hurry to eat his lunch, and simply reversed the triggers. The chokes were that way 'cause everybody ordered guns that way, since they were supposed to "shoot like a rifle". Frank Major Tobin was simply disinterested in building guns at this point, and didn't inspect it when it was finished, and the rod for the automatic safety was left rotated, so it didn't work.
A waterfowler is born. Names mostly left out to protect the innocent, now dead for almost a century.
Best,
Ted