I scored 3 light boxes used by dealers to show the new models from the 1950's thru 1960's. Light boxes all work and in good shape except pictures have damage, the clear coating on the transparencies wrinkled.
I have one of 1962 Starfire, 1964 Ninety-Eight and 1964 Jetstar I.
Not sure what I am going to do with them yet. I use to see some of the transparencies out there reasonable. If I could find some, I will put them in and hang them in the garage. If not, they may end up on eBay.

1964 Oldsmobile Ninety Eight Holiday Sports Sedan

1964 Oldsmobile Ninety Eight Holiday Sports Sedan

1962 Oldsmobile Starfire Coupe

1964 Oldsmobile Jetstar I Sports Coupe

 

Very nice find!! They have a nice collection of these hanging in the showroom at Fusick's. They look awesome when they're all lit up.

 

If you decide to sell, I might have interest in one. I have a single transparency for 1952 Oldsmobile I have had for years, 1952 Oldsmobile is my primary year of collecting interest. Or kindly advise if they go to ebay and I'll try there. Mine measures 17" X 21-1/4".

Thanks - Chris

 

These measure 23" x 18" x 4" overall, including wood trim, so I think these are the ones for your transparency.
I have decided to sell a couple of them and keep one for myself. I wish the transparencies were nicer in them.