Roberto Clemente - 1984

Babe Ruth - 1983

Advertisement from the July 1983 issue of First Days, from Cover Outlet showing various dual postmarked first day covers for the Babe Ruth issue

Bowie Stamp Club with dual postmark, first day of issue and Bopex Station

First Rank dual with first day of issue and Saginaw Valley Stamp Society, Midland, Mich

First Rank dual with first day of issue and Cooperstown, NY

1969 Centennial and 1983 Babe Ruth dual first day postmarks