Are we sure it's not Frost Proof? It appears to have a fan to draw air from the freezer to cool the fresh food section, which is something I've always associated with frost free system.
I can't recall whether it has been stated here in the past that some Frigidaires had those fans, but still weren't frost free.
If it's a Frost Proof model, being in such beautiful shape and complete, it's well worth the asking price.