I'm not sure that's coppertone, looks more like a Mocha or Chocolate color. Judging by the condition of the paint in certain photos I wonder if these have been repainted. They sure are going to need a powerful cleaning before use!
I seem to remember another Frigidaire set that was located in that direction that was in a barn with some snakeskin residue. There were offered here for sale. I don't know if they ever sold or not.
I think those are the unshaded "Coffee" color that Frigidaire introduced in '77. I remember the dealer I worked at that year had a set in that color on display.
These are the "Crown" models and my best sellers when Rudolfs sold them back in the mid seventies. Two speeds,super eighteen pound capacity, Jet Circle Spray fill, RapiDry Spin, detergent and bleach dispensers and 1 piece to 18 pound capacity.