Pocket Watch Database
Rockford Grade 520 (Model 4) Production Metrics
Grade:
520
Size:
16s
Model:
4
Total Runs:
5
Total Produced:
600
Production Era:
1899 - 1903
Earliest Serial:
#546,801
Latest Serial:
#628,300
Rockford Grade 520 (Model 4) Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1899,1901,1902,1903]
[100,100,100,300]
Rockford Grade 520 (All Models) Production Metrics
Grade:
520
Size:
16s
Model:
4
Total Runs:
5
Total Produced:
600
Production Era:
1899 - 1903
Earliest Serial:
#546,801
Latest Serial:
#628,300
Rockford Grade 520 Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1899,1900,1901,1902,1903]
[100,0,100,100,300]
Rockford Grade 520 Production Runs
| Run Sequence | Run Start | Run End | Quantity | Est. Production Year | Profile Code |
|---|---|---|---|---|---|
| 1 | 546,801 | 546,900 | 100 | 1899 | 16S-M4-21J-HNL-A5P |
| 2 | 577,801 | 577,900 | 100 | 1901 | 16S-M4-21J-HNL-A5P |
| 3 | 593,801 | 593,900 | 100 | 1902 | 16S-M4-21J-HNL-A5P |
| 4 | 626,601 | 626,700 | 100 | 1903 | 16S-M4-21J-HNL-A5P |
| 5 | 628,101 | 628,300 | 200 | 1903 | 16S-M4-21J-HNL-A5P |
RUNS5 |
FIRST546,801 |
LAST628,300 |
ESTIMATED PRODUCTION600 |
PRODUCTION ERA1899 - 1903 |