Ok you asked.
This is going to take a while - just the ones I already had in a separate file folder for tie downs Computer shows there are about 70 examples just in that section. Not sure how many you want but here goes
5F07K261xxx - Easy to see these have been off so the finish is not original
6R09K18-19xxxx
6R07C230xxx
6R09K17xxxx
6R09K164xxx
6R09T197xxx
6R09T1973xx
6R09K17xxxx
Sure there are more if I went through all the files included the non-labeled/processed bunch.
Can't say I've seen may that didn't fit the expected pattern especially on the earlier cars unless the car was a "restored" car. Then there have been many examples - especially on back east cars on the west coast or western cars built on the eastern side of the country as one might expect.