Years ago I looked at a used car on a lot, sign said 37,000 original miles. Sure enough odometer read that (1971 cars went to 99,999.9 then 0). It was believable, except pedals worn a bit. In glove box was a bunch of inspection receipts showing 40k,50k, etc. then started over. I pointed it out to lot owner...he threw receipts away & removed sign.