Elgin Grade 521 Production Charts

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

Elgin National Watch Co. Grade 521 Production Map Relative to Company Lifespan

Start of Production

End of Production

Grade	Production	Runs	Lowest	Highest	Start	End	Profile Code/Image
521	219,000	13	36,207,001	37,770,000	1937	1938
	25,000		36,207,001	36,232,000	1937
	5,000		36,265,001	36,270,000	1937
	20,000		37,356,001	37,376,000	1938
	22,000		37,431,001	37,453,000	1938
	16,000		37,496,001	37,512,000	1938
	18,000		37,542,001	37,560,000	1938
	21,000		37,585,001	37,606,000	1938
	26,000		37,634,001	37,660,000	1938
	25,000		37,671,001	37,696,000	1938
	12,000		37,696,001	37,708,000	1938
	11,000		37,721,001	37,732,000	1938
	10,000		37,741,001	37,751,000	1938
	8,000		37,762,001	37,770,000	1938