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Hi all, I picked up a lovely Heuer chronograph pocket watch with a Valjoux 61 single button chronograph movement. I didn't notice when I bought it but the pusher which should sit within the crown is missing. The pusher within the crown pushes down two pins which you can see in the pictures, the pins then push a sleeve which sits over the crown, this then actuates the start, stop and reset of the chronograph. Unfortunately I have no idea where to find a replacement... anyone have any ideas? The dimensions seem to be quite different to old pusher pocket watch crowns. The crown is 8.0mm in diameter, the tube diameter is 3.1mm and the cavity for the pusher atop the crown is about 3.9mm Thanks in advance!

Hi there, am new to forum. Am smitten by these beautiful machines - my first mech was a lovely unusual Rotherham, my second I purchased just on looks for next to nothing only to find out it is a mostly intact repeater minus gong. The rest is history. Within an hour of getting a lovely c1930 Heuer chrono pocket watch ref.701 with a v61 movement, that had survived 90 odd years just fine; I showed it to a friend who tried to turn it over with the back open and fumbled it. It only works now when looking at the movement, my untrained ear and diagnosis is that the Upper balance jewel is cracked. My question is simply around finding the correct jewel to replace this; is this an off the shelf jewel that can be replaced, can I find a balance bridge complete? Or does something have to be custom made? On another unrelated quick note I dont suppose anyone could tell me if I can use a Landeron 48 balance wheel and bride in a 248 movement? I am a complete watch novice but am very technically minded, a fast learner, and am also able to pull back and call for help if things are going pear shaped. Would like to attempt this myself and have bought something jewel setting tools am just minus a press currently. Will reach out but locally the knowledge is slim I live in top of the South Island in New Zealand- Nelson. Small place. Thanks for looking Stew