They were made after 1978.
Vintage Game Used 1970s Riddell PAC-44 Football Helmet - Size Large
Riddell PAC-3 Chicago Bears Football Helmet 7 3/8" w/ 2 Bar Facemask NOCSAE 1974
Vintage Chuck Foreman #44 Vikings Throwback Stitched Jersey
VINTAGE RIDDELL Z2EG (EGOP) FOOTBALL HELMET FACEMASK -EDDIE GEORGE- CHOOSE COLOR
NOS VINTAGE RIDDELL FOOTBALL HELMET SWEATBAND POCKET for WD 1 - Large
VINTAGE RIDDELL Z2BD (ROPO-DW) FOOTBALL HELMET FACEMASK /TOMLINSON/ CHOOSE COLOR
