I didn't even think to look at the warranty listing we have.
211314 (E435300) shows an in-service date of 08/07/90 with 100 miles on it on the sheet (Central Division).
211353 shows an in-service date of 12/27/89 with 44 miles (Oroville).
I'm guessing that they replaced the door. Have you done a Carfax on your car? I think it'd be interesting to run one on the other one as well to see.