I've disassembled it before so that was the easy part. I still see no other markings anywhere. The barrels are 18 1/4" and the "CHOME BORE" actually says "CHOKE BORE". Opps
I remember years ago finding a web link that suggested that it was made sometime in the early 1900's and sold from a hardware store in Cincinnati, OH but I cant for the life of me find it again or even how I managed to come to such a conclusion given the lack of identifying markings. Vintage or not I still like my Boomstick. Thanks for the help.