No pictures of the back of the chairs. Would really like to see the recessed handle on the seatback. If I recall correctly at center, but closer to the top of the backrest, there would be a recessed handle with nickle-plated finish that helped the waiter move the chair around. Like this:

backside of a real dining or lounge car chair

Also, some companies ordered chairs where the feet were different. They weren't regular feet like you'd see in an office chair. They were slightly different so as not to wear out the carpet. I wish I could explain that one better, but check out the legs on these chairs:

Amtrak dining car chairs

I know that's Amtrak, but I seriously doubt Amtrak bought new chairs, just had them reupholstered.