I don't believe you..I think you just have the box..........Pictures!!I have one, or at least something very close.
I have what's referred to as the Rossi matched pair.
It's that single shot pistol with two barrels.
One is .22lr and the other is .45Colt/.410.
It's a fun little pistol.
I do believe my barrels are 10". View attachment 291125
I saw that coming.I don't believe you..I think you just have the box..........Pictures!!