I found a box of tins with staffs in them. I am trying to decipher what the numbers mean. Most of the tins have only a 3 or 4 digit number and fraction. Some also have some reference to a maker. I tried Bestfit, Marshall, and Quick-Fit but can't figure out what the numbers refer to. They don't appear to be related to staff length. Can anyone help?

Mike these are all NEWALL parts. most seem to be for wristwatches....
Central=Benrus...model C 7 1/4 Staff 704
Piece model 53 5 1/4 Staff 483.

the rest i can get info for later... Francis...

Thank you Francis! I have a lot more than in the photos so don't bother to look up more for me. Now that you told me the system I should be able to find a Newall catalog here somewhere.
Thanks again,
Mike