Pocket Watch Database

E. Howard Watch Co. (Keystone) Size 12s Model 1912: Grades

Model 1912 Grades

Grade Total Grade/Model Production Runs Est. Production Years Earliest Serial Latest Serial Profile Code
Series 6 13,000 10 1913 - 1920 1,172,001 1,309,000 12s-M1912-19j-ONP
Series 7 182,400 21 1910 - 1924 1,147,001 1,403,400 12s-M1912-17j-ONP
Series 8 9,950 10 1910 - 1921 1,095,001 1,290,000 12s-M1912-23j-HNP/ONP

Estimated Timeline for Grades

Comparitive Grade Production