NOS tires

[SuperCars]

I would agree that original tires that came on a new car from the factory in the 60's would be non-DOT. But replacement tires of the exact kind made by the original tire manufacturer in the following several years, most likely could have had DOT on them. Wouldn't these fall into NOS category as they were vintage production by the same companies and not produced by the reproduction tire companies today such as Coker and Kelsey Tire Companies.

I suppose to answer my own question, the "correct" NOS tire for a car of that time frame would be NOS ones made earlier in production with no DOT label on it; rather than later production NOS DOT labeled tires, even though they were produced by the same tire manufacturer.