H-R was using aluminum skin rather than fiberglass sheeting on C and A gasser motorhomes at least through 2003. Even after switching to fiberglass skins, H-R did not laminate the wall panels, rather they built framed walls and skinned them.
This practice continued until Monaco Corp shut down the Holiday Rambler plant, and moved production of the brand to their R-Vision plant. At that point, in my opinion, Holiday Rambler ceased to exist, when the brand just became another badge on R-Vision RVs, for C's it would be TrailLite build technology with Holiday Rambler decoration.
The H-R Atlantis you are looking at can be considered special, a rare find of something that was too expensive to continue manufacturing in a market going downhill and buyers seeking lowest possible prices. If it is in good condition, I say snap it up, nobody makes a C that well built any longer, except maybe LazyDaze.
