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July 17, 1900, is the date of U.S. Patent No. 653,953, granted to John Gardner and assigned to Winchester Repeating Arms Co., for a primer. The other date appears to be July 14, 190? to my eye. Patents weren't issued on July 14, 1902, that week they were issued on the 15th. In that your 8-gauge Winchester LEADER shells appear to have the New No. 4 primer, they are from after 1904.
Threaded Mode