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The serial number on the movement dates to ca 1941.
The cal looks like a 240 (= R13,5).
How to adjust the speed of the clock. The clock is running but the time is going forward
Come on, Don. He's saying it's running too fast and asking how to regulate.[/QUOTE
I'm no expert, so someone else may jump in and say, " oh don't do that!"
Caveat is that you can seriously damage your watch by attempting to adjust it if you don't know what you're doing.
There's a little finger on the balance cock that points to a scale. One side of the scale reads A and the other side reads R. Press against the finger to slide it in one direction or another to regulate the timing.
A is for avancer, French for Fast
R is for retard, French for Slow
In your case, you want to move the finger toward R to slow down the movement.
I believe each hash mark on the scale indicates 15 seconds per day. So if your watch is running 7 seconds fast, move it halfway to one hash and time it again.
I hope this helps! Don't break your watch! I wouldn't work on my own watch, but I believe in you!
I believe each hash mark on the scale indicates 15 seconds per day. So if your watch is running 7 seconds fast, move it halfway to one hash and time it again.