Janney Semple Hill & Co., Minneapolis sold an Invincible H&R (and maybe an IJ) tradename single, an Invincible Belgian tradename double, and a Rapid Fire Steel Choke Bored Invincible single (which may have been a Davenport)

https://www.proxibid.com/Firearms/Sh...ation/60305211

Art I like reading your recounting of how your love affair began. I like you remembering your roots and respecting and recognizing what that gun did for you.

A corn Crib gun for sure, probably worked well keeping the critters away, Gary