I thought I read a post here that indicated there were differences in the door stamping for 70-72 Oldsmobile A bodies. I have searched but have not been able to find the post.
I would appreciate it if someone would post the visual differences and the approximate usage dates.

 

There are post and non post doors. Which are you working with?

 

Mine is a non post. I believe the original posting indicated there were differences in the stampings on the latch side of the door stamping. These were running changes like the trunk lids which went through three engineering changes during the 70-72 period.

 

I believe it had to do with a horizontal rib above and below the blue certification label on the drivers side door.

 

Your description allowed me to search on the correct terms and I found the discussion.
https://classicoldsmobile.com/forums...e-decal-82094/