Hello all, I have been struggling to find a replacement stem and crown for a pocket chronograph that I have running a valjoux 9 movement. Since the piece did not come with one to begin with, I don't have the stem measurements. If anyone has any suggestions for me I would greatly appreciate it. The outer measurement of the crown tube is 8mm and it is supposed to have a pusher type crown that has a button in the center to activate the chronograph.