I am in need of a balance staff for a grade 372 Elgin s/n 17134870. One place indicated the no. was 2533. I looked on John Duval's staff dimensions document and #2533 is not listed, but 2532C is. So what is the correct part number? Thanks in advance.

The correct number is 2532-C. I believe the C stands for an oil groove. You might have a hard time finding that,but I believe the #2532 will fit.

Thank you Brian, I wondered what the C indicated.