Need help with shotgun ID
I have acquired an older double bl "Rabbit Ear" 20 ga. I've taken in down for a good cleaning and I've found the usual (blurded) stamp marks and a couple of numbers stamped on most of the main parts. I haven't found any kind of name or ID stamp other than a: "triangle with a circle inside of it with a capital T in the circle" on each barrel.
Any one seen this stamp before or have a clue of the manufacturer of the weapon?