Over and Under double barrel shotguns don’t seem innovative to us. But back in the 1920s, shotguns with stacked barrels were still a new idea to most shooter. This old add from Boss shows how they sold these new-fangled things.
I like the “Vertical Gun” description, as well as the claims of “Perfect and quicker alignment, better balance, less recoil.” I’m not sure these claims are true (less recoil definitely isn’t), but that’s salesmanship for you.

Would love to have a copy of that someday, who knew it would be become such a storied and beloved gun back then 50 years prior to Ivo Fabbri or 90 years prior to them being cloned entirely
My little Boss is a magic wand for me, but still tip my hat to SxS’s for hunting
Clif, you seem to know something about where the Boss 28 gauge O/U went in the Middle East. Can you tell me who bought it and where it went? Could be interested in trying to buy it back.