u/Fluffyplumbuspump

I stumbled on two vintage ac unit thats are supposedly still in use on this commercial warehouse. They're used for cooling the offices in the center of the warehouse. I dont work in hvac at all but I've seen thousands of different hvac systems throughout my career, and these two stood out to me. They're certainly the most unique units ive ever seen. Does anyone know what the manufacturer of these units may be? There were no obvious markings and the data plate is completely faded. They're located in Norcross, Georgia.

I wanted to try and find a rough date of manufacture. Google is no help, as over half of the photos it shows me are obviously AI generated and not at all helpful.