About 6 months ago I bought a big lot of Model A parts and these were in there. Not sure what it's off of but I did find some 29 Chevrolet parts mixed in. After 6 months of driving me nuts everytime I walk by it, I give up. I'll ask the experts (or as close to a group of experts as I can think of).
Are there regulators behind those? If so, handles like those would typically be for coupe rear windows, not any sort of side glass.