Paying attention to the history of vintage V&C, there was a movement that must say: caliber 453. Ebauches JLC caliber 450, 12.75 '''
I have seen the following generations in the family:
1. 453C1
2. 453/2C
3. 453
4. 453/3C
5. 453/3B
6. 453/3BW
After searching a lot of pictures , the edge of movement 1-4 is uneven, and the structure of movement 5-6 has been improved.
But I still can't know the meaning of the three letters C, B and W exactly.
Do you have more information ?