I know my parents bought our Metzendorf in 1957. Ours was 15 foot in length, and very cozy for a family of three. I slept very comfortably on the front bed made from the dinette. It was a very basic travel trailer with none of the appliances and other things that many expect (or need) today. But, it was a wonderful little trailer that we towed all over the USA and Canada before trading it in for a 1962 Fan Travel Trailer with a toilet and a gas refrigerator (my mom never liked the ice box).
I will have to find a picture of our old Metzendorf and scan it sometime. Meanwhile, I was thrilled to find a 1960 Metzendorf on eBay. The pictures provided a nice trip down memory lane, and I was pleased when I was given permission to post some of those pictures here.
I remember the exterior was always shiny like on the picture. My Dad tells me that the exterior was similar to the aluminium used to make cans, and does not oxidize like other aluminium tends to do.
This 1960 Metzendorf is presently still available: