This is the early style from Aero Caproni. They made planes in WW I & II, then motorcycle after the war. In '58ish they renamed Aeromere and realed the more modern style pressed steel framed bikes. I have a Capriolo 75 from Aeromere, imported by Cosmopolitan Motors. Apparently Jim Dillard ran a museum in the Colorado area. This must have been from his collection.