Kent
01-20-2004, 12:44 AM
Mats:
According to pages 105-6 of "Illustrated Manual of American Watch Movements," E & J Swigart Co, Cincinnati, OH, 1952, reprinted by S. LaRose, Inc., Greensboro, NC (copies may still be available from S. LaRose (http://www.slarose.com)):
Grade 956
Fitted with single roller before S/N 2,477,001
Fitted with double roller after S/N 2,477,000
(exceptions are known to exist for similar serial numbers listed for the grade 992.)
Cat No. 434 Staff, balance, D.R.
Cat No. 435 Staff, balance, S.R.
Good luck,
Kent
That guy down in Georgia :smile:
According to pages 105-6 of "Illustrated Manual of American Watch Movements," E & J Swigart Co, Cincinnati, OH, 1952, reprinted by S. LaRose, Inc., Greensboro, NC (copies may still be available from S. LaRose (http://www.slarose.com)):
Grade 956
Fitted with single roller before S/N 2,477,001
Fitted with double roller after S/N 2,477,000
(exceptions are known to exist for similar serial numbers listed for the grade 992.)
Cat No. 434 Staff, balance, D.R.
Cat No. 435 Staff, balance, S.R.
Good luck,
Kent
That guy down in Georgia :smile: