Modified style of helmets, 1941-48. 1941 helmets are silver and black. Modified third 1941 Eagles uniform combo to have green jersey, which was worn in Weeks 13 and 14.
November 30, 1941, Chicago Bears at Philadelphia Eagles:
October 22, 1944, Boston Yanks at Philadelphia Eagles:
December 19, 1948, Chicago Cardinals at Philadelphia Eagles, NFL Championship: