PRE VACHERON & CONSTANTIN POCKET WATCH

As I know there a a scant number of official Vacheron & Constantin movement serial # charts out there, I would please like to find out what year a solid silver Vacheron pocket watch, with the movement serial # of 57678, was manufactured.  I am thinking 1853.

Please advise when time permits.

Thank you very much.

SonoranKen
If you post photos and case number it could help (nt)
07/06/2013 - 20:42
M