Can anyone identify these as an original or reproduction?

My grandpa got these in the late '60s or early '70s. He either picked them up at a swap meet or they came on an all original 1931 5 window coupe. They are of very high quality with a steel grommet sewn in the bottom to drain water and a rubber rope running around the back to stretch over the the tire.

Any advice/info would be greatly appreciated!

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