1957 “Experimental” 26′ #O-8000C
In 1956-1959, Ohio Marketing experimented with offering a “Custom” version of its trailers, called the “Custom Fleet” for a 10% up charge, and attempted to limit layout changes on its standard models, the “Cruising Fleet” to control costs. Airstream assigned a unique serial number to 10 of them.
The concept seems to only have lasted a few years until 1959, with Airstream going back to offering customized versions of its base models.
California was a little more laid-back in their custom program, only a 5% upcharge, no special names, but layouts had to follow the strict California Division of Housing regulations and approvals.