E. Howard Watch Co. (Keystone) Series 4 Production Charts

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

Grade	Production	Runs	Lowest	Highest	Start	End	Profile Code/Image
Series 4	16,350	24	859,021	983,500	1905	1908
	7,420	11	859,021	969,500	1905	1908	16s-M1905-17j-ONP-A5PTI-
	480		859,021	859,500	1905
	140		935,061	935,200	1907
	200		935,801	936,000	1907
	100		937,001	937,100	1907
	1,000		951,001	952,000	1907
	1,000		955,001	956,000	1908
	1,000		957,001	958,000	1908
	1,000		959,001	960,000	1908
	1,000		961,001	962,000	1908
	1,000		967,001	968,000	1908
	500		969,001	969,500	1908
	4,800	7	913,601	983,500	1906	1908	16s-M1905-17j-ONL-A5PTI-
	100		913,601	913,700	1906
	500		969,501	970,000	1908
	800		972,001	972,800	1908
	200		974,001	974,200	1908
	700		974,301	975,000	1908
	1,000		978,001	979,000	1908
	1,500		982,001	983,500	1908
	4,130	6	935,201	969,000	1907	1908	16s-M1905-17j-HNP-A5PTI-
	30		935,201	935,230	1907
	1,000		952,001	953,000	1907
	1,000		954,001	955,000	1908
	1,000		956,001	957,000	1908
	100		965,801	965,900	1908
	1,000		968,001	969,000	1908

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