I didn't realize it was OK to "reset" an odometer. Setting it back to zero, or nearly zero, is rolling back the miles--that seems like a major legal issue.
By "the letter of the law", perhaps this is true. Used car lots used to do it TO GAIN VALUE to their used car's resale value ( that and the 100,000 mile limits of the old odometers) would be for the purposes of defrauding a consumer.
Restoration takes on a different connotation, in my opinion. I m not advocating for saying it is OK, but the purpose is certainly different. Now selling a restored car with an odometer change stating the mileage as "original mileage", could cause issues once again for any would be future buyer...a slippery slope, to say the least.
You never could know who's hands our 'restored car' may end up in years from now when we are all long gone. Unscrupulous people abound.
I cannot count how many "low, original mileage" claims I see today in new owner's claims as well as various listing of cars for sale...like 20 -30% all claiming (it seems), under 70,000 miles...I find those numbers inaccurate. It was hard enough to find 10-12 year old cars under 100k in the late 70's, not to say they were not out there, only perhaps not yet for sale.