This popular size trailer sold for $4550 new, with about 475 made this year, and almost 600 the following (1959).  The economy was booming! 

First full year for 7 panel end-caps. Lights on the California trailers move to Bargman 99's, Ohio remains recessed Bargman 9's.

California also seemed to have created some 2 door aft bedroom layouts this year.