Mismatched serial numbers on film backs

[flashbulbman]

Two of the film magazines I wish to buy have serial numbers that do not match. The insert has a number different from the shell. Is this bad? Any problems getting a magazine with non-matching numbers or should they work just as well as one with matching serial numbers?

 

[Victorh]

There is a lot of nonsense about matching or non matching numbers going on.

I just repeat what my technician with over 30 years at a Hasselblad service center says:
Non matching inserts do not have any influence on the performance of the film magazine.
Correct alignment of the back does not depend on matching insert.

Older used film backs do benevit from correct alignment.
Once a back has been subject to a fall the alignment is out for sure.
Any used film back older than 5 years should be checked and in most cases corrected for alignment.


Vic.