Both of mine are early 1951 overdrive cars. The Merc-O-matic is the first generation for 1951. They are smooth, quiet, & comfortable. The Sport Sedans have plenty of room inside. I'm sure you'll like it. My Pop had two of them but I only inherited one from him. His first was about the same color as yours, a radiant green poly. I purchased the other out of New Mexico. Both were built in St Louis, Mo. Yours looks like Sheffield Green.