Pocket Watch Database
Rockford Grade 640 (Model 3) Production Metrics
Grade:
640
Size:
16s
Model:
3
Total Runs:
2
Total Produced:
2,000
Production Era:
c.1910
Earliest Serial:
#824,001
Latest Serial:
#842,000
Rockford Grade 640 (Model 3) Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1910]
[2000]
Rockford Grade 640 (All Models) Production Metrics
Grade:
640
Size:
16s
Model:
3
Total Runs:
2
Total Produced:
2,000
Production Era:
c.1910
Earliest Serial:
#824,001
Latest Serial:
#842,000
Rockford Grade 640 Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1910]
[2000]
Rockford Grade 640 Production Runs
| Run Sequence | Run Start | Run End | Quantity | Est. Production Year | Profile Code |
|---|---|---|---|---|---|
| 1 | 824,001 | 825,000 | 1,000 | 1910 | 16S-M3-21J-HNP-AT |
| 2 | 841,001 | 842,000 | 1,000 | 1910 | 16S-M3-21J-HNP-AT |
RUNS2 |
FIRST824,001 |
LAST842,000 |
ESTIMATED PRODUCTION2,000 |
PRODUCTION ERAc.1910 |