I have a Waltham 16s, model 88,gr 28,15j,sw,ss.
It is in need of a Balance staff #2844.

My question is, how many pivot sizes did this staff use, and did it take a long hub, or short hub. Both of the pivots are broken off, so I can't measure.

Frank

Frank,
From what I can find, the 2844 staff just came in adjusted and unajusted grades with the only difference (I believe)is in in the finish. The pivots would be 10to12.
Brian C.