Pocket Watch Database

E. Howard Watch Co. (Keystone) Series 10 Production Charts

Note: Production dates are estimations but should be accurate within +/- 3 years.

[1909,1910,1911,1912,1913,1914,1915,1916]
[500,3100,3700,700,5300,2000,0,2500]




Grade Production Runs Lowest Highest Start End Profile Code/Image
Series 10 17,800 21 1,136,501 1,319,500 1909 1916
15,650 15 1,136,501 1,319,500 1909 1916 16s-M1907-21j-ONL-A5PTI-
500 1,136,501 1,137,000 1912
500 1,144,501 1,145,000 1909
1,820 1,148,001 1,149,820 1910
100 1,149,901 1,150,000 1910
2,900 1,150,101 1,153,000 1911
200 1,153,801 1,154,000 1912
800 1,154,201 1,155,000 1913
500 1,158,001 1,158,500 1913
300 1,170,001 1,170,300 1913
1,680 1,170,321 1,172,000 1913
1,000 1,238,001 1,239,000 1913
850 1,239,151 1,240,000 1913
2,000 1,278,001 1,280,000 1914
2,000 1,309,001 1,311,000 1916
500 1,319,001 1,319,500 1916
2,150 6 1,146,001 1,239,150 1910 1913 16s-M1907-21j-ONP-A5PTI-
1,000 1,146,001 1,147,000 1910
80 1,149,821 1,149,900 1910
100 1,150,001 1,150,100 1910
800 1,153,001 1,153,800 1911
20 1,170,301 1,170,320 1913
150 1,239,001 1,239,150 1913