1969 NFL 100th Anniversary First Day Cover Signed By 4 Hall of Famers - Halas, Hubbard, Graham, Trippi (PSA 83001215)
- This professional football 100th Anniversary FDC features a 100th Anniversary 6 cent stamp which was cancelled in the New Brunswick post office on the first day of issue, Sept 26, 1969. This cover is signed perfectly by 4 Hall of Famers.
- George Halas- Hall of Fame 1963 (Deceased 1983)
- Robert Cal Hubbard- Hall of Fame 1963 (Deceased 1977)
- Otto Graham- Hall of Fame 1965 (Deceased 2003)
- Charley Trippi-Hall of Fame 1968
- certified by PSA and authenticity guaranteed by RSA