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Posted By: William

It's not exactly a state secret. Dave Bushing and Joe Phillips published a guide ten years, or so, ago. Generally the dates can be determined by the stamping, both in placement and design. For example, starting with the 1940 season, AL baseballs were stamped with (star) OFFICIAL (star) American League Ball stampings (stars before and after OFFICIAL). Starting in 1946, a star was also placed below William Harridge's signature. The guide does not list any further specifics for late Harridge baseballs. As a collector of these balls, I'd also love to have some more information regarding their dating.