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Rockford Grade 81 (Model 8) Production Metrics

Grade:

81

Size:

18s

Model:

8

Total Runs:

5

Total Produced:

600

Production Era:

1893 - 1894

Earliest Serial:

#415,001

Latest Serial:

#442,150

Rockford Grade 81 (Model 8) Production By Year

Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1893,1894]
[200,400]

Rockford Grade 81 (All Models) Production Metrics

Grade:

81

Size:

18s

Model:

8

Total Runs:

6

Total Produced:

1,600

Production Era:

1886 - 1894

Earliest Serial:

#245,001

Latest Serial:

#442,150

Rockford Grade 81 Production By Year

Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1886,1887,1888,1889,1890,1891,1892,1893,1894]
[1000,0,0,0,0,0,0,200,400]

Rockford Grade 81 Production Runs

Run Sequence Run Start Run End Quantity Est. Production Year Profile Code
1 245,001 246,000 1,000 1886 18S-M3-9J-HGL-U
2 415,001 415,200 200 1893 18S-M8-17J-HTL-APTI
3 433,751 433,800 50 1894 18S-M8-17J-HTL-APTI
4 437,801 438,000 200 1894 18S-M8-17J-HTL-APTI-MIXED
5 439,651 439,700 50 1894 18S-M8-17J-HNL-APTI
6 442,051 442,150 100 1894 18S-M8-17J-HTL-APTI
RUNS

6

 FIRST

245,001

 LAST

442,150

 ESTIMATED PRODUCTION

1,600

 PRODUCTION ERA

1886 - 1894