The international name plate was only put on trailers that had the Int'l distinctions such as the Ogden water purifier, padded walls over the bed(s) and other features I can't recall at the moment. Search these forums and you'll find the listed features of the three model distinctions.
4CU 2699 / AIR 10 / TAC AZ-1
I'm haunted by aluminum.
Charter Member of the 4 Corners Unit.