Yale Bulldogs Game Used Riddell TK5 suspension helmet.  The helmet does not have any logos on the sides of the helmet, as the team wore in 1964-65.  The helmet has a factory datecode in the crown of the helmet from 1964.  The helmet is all original and complete as sourced - with the original suspension, jawpads, chinstrap, and 2-bar BD-9 mask from 1964.   The navy side stripes are factory painted on the helmet as Riddell did during this era.  The helmet shows moderate exterior and interior game wear.   The helmet has early Riddell heat stamps on the rear of both sides flanking the center ridge of the helmet.  A very rare helmet of a highly desireable model, that obviously saw some years of action on the gridiron.