Pocket Watch Database

E. Howard Watch Co. (Keystone) Grade Series 12 (Model 1921) Production Metrics

Grade:

Series 12

Size:

10s

Model:

1921

Total Runs:

5

Total Produced:

47,450

Production Era:

1921 - 1928

Earliest Serial:

#12,001

Latest Serial:

#63,450


E. Howard Watch Co. (Keystone) Grade Series 12 (Model 1921) Production By Year

Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1921,1922,1923,1924,1925,1927,1928]
[6500,6500,6500,6500,4000,4000,13450]

E. Howard Watch Co. (Keystone) Grade Series 12 (All Models) Production Metrics

Grade:

Series 12

Size:

10s

Model:

1921

Total Runs:

5

Total Produced:

47,450

Production Era:

1921 - 1928

Earliest Serial:

#12,001

Latest Serial:

#63,450


E. Howard Watch Co. (Keystone) Grade Series 12 Production By Year

Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1921,1922,1923,1924,1925,1926,1927,1928]
[6500,6500,6500,6500,4000,0,4000,13450]

E. Howard Watch Co. (Keystone) Grade Series 12 Production Runs

Run Sequence Run Start Run End Quantity Est. Production Year Profile Code
1 12,001 38,000 26,000 1921 10S-M1921-17J-ONP-A3PTI
2 39,001 43,000 4,000 1925 10S-M1921-17J-ONP-A3PTI
3 44,001 48,000 4,000 1927 10S-M1921-17J-ONP-A3PTI
4 49,001 52,000 3,000 1928 10S-M1921-17J-ONP-A3PTI
5 53,001 63,450 10,450 1928 10S-M1921-17J-ONP-A3PTI
RUNS

5

FIRST

12,001

LAST

63,450

ESTIMATED PRODUCTION

47,450

PRODUCTION ERA

1921 - 1928