About 15 years ago we bought a similar teardrop, a 1946 or '47 Modernistic camper, made in L A, made of .040 aluminum, put together with aircraft type rivets, and roughly in the shape of a section of an airplane wing. It is 4 feet wide, 10 feet long, and about 5 feet tall from ground to top. It has one door on the right (curb) side. Like many old trailers it had some modifications over the years, including wood framework and paneling on the inside. We stripped off a couple layers of paint on the outside, removed the interior paneling to find two more layers of brushed on paint which we stripped off. We had to make a new rear hatch and lower rear pan. Installed all new lights, new tires, and over a 9 month period got it back to original as much as we could and ready to camp in. My guess is after WW2 ended, military airplane production all but ended and there was surplus aluminum available and plenty of workers that knew how to build with it. I found markings on the interior from both Reynolds and and Alcoa[img][img][album][/album][/img][/img]. Our teardrop has a steel frame but it doesn't extend all the way to the rear. It has a torsion axle that uses coiled springs rather than rubber inserts. Teardrops almost identical to ours were manufactured under other names, and Modernistic offered theirs either assembled or in kit form. We camped in ours for a couple years, then bought a 13 foot Uhaul fiberglass camper, then a 17 foot Casita fiberglass camper. The Uhaul got sold, the teardrop sets in our barn, and prior to covid only went to a couple car shows behind our '76 Ford pickup.

photo is before completion.