In 1976 I saw a 1940 Deluxe Coupe in Ed Winfield's garage in Las Vegas that had about 40,000 miles on it. Everything fit perfectly. But this was a car with original factory leather interior that was at the 1939 auto show in San Francisco. Winfield bought it at the show for his wife.
Kong Jackson bought it and drove it home to Glendale the next day. It still smelled new inside. I will not say what Kong paid. He said not to.
A few years later my dad bought a 37 Standard Coupe with 38K miles and almost perfect. Fit was excellent.
Both cars mentioned did not have the original miles on it. They came from Montgomery Ward as replacement miles
Tim