Hello,
Bill you are correct, they should. I have talked to my son about this. His major is in entertainment, he's done several productions and a movie. He tells me that every show has a budget, TV shoots very fast and have lower budgets than motion pictures so they have only so many $ to spend. Sometimes you have to take what is available the day of the shoot. Props department get the script material and some times ony have a one day window for a prop call. Sometimes you find exactly what you want but the owner has restrictions so it will not work. If you have a big budget like JFK or Tucker, you can have replicas built if you can not find what you want.
But to me still, the bottom line is that these retro shows get these cars out to be seen. The only show recently, and it is now off, Pan Am, I did not care for the way a car was treated, it was a red 1961 Cadillac convertible in the first episode c:893USA-Smilie-thumb
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Thanks For Listening.