That is a 1978 Argosy that someone has re-branded as an Airstream. The paint scheme gives it away. It is not that uncommon to see Argosy units painted and re-branded.
Yes, the front and rear caps on an Argosy are galvanized steel. If there is any doubt, you can do the "magnet test". If a magnet sticks, it is galvanized steel. The Airstream units have aluminum front and rear caps.
Based on the windows, it is a center bath and rear bedroom floorplan. The rear would have either twin beds or a rear "salon" (convertible sitting area).
The Argosy units do have a few less bells and whistles but are still very solid units. For example, none of the Argosy motorhomes have leveling jacks or remote start water heaters. The Argosy units have steel rims where many of the Airstream units have Alcoa aluminum rims. Both are built on Chevy P-30 truck chassis. They are good solid units and you can usually get them for far less than the Airstream counterparts.
On an Argosy, the Chevy chassis VIN
(used for the title) is in the engine compartment wall (upper left). The Argosy serial number
is on the driver's side dash but only visible from the outside window. It is a sticker so many of them have fallen off!
There are a few rare examples of actual painted Airstream units (1979) but those have this paint pattern
. I refer them them as transition units. Here is another example
I hope that helps! Here is a link to my Argosy motorhome page