See Darts for Billboard articles about the introduction of this new-style cabinet to the pinball industry. The manufacturer's original playfield drawing (not shown here) is stamped ORIGINAL, dated 10/22/59 and is signed by (Harry) Mabs (drawn by him). The manufacturer's Tool Room copy of this drawing (also not shown here) is stamped MASTER, drawn 3/5/60, completed 4/6/60. Williams documentation shows the production date as 07-11-1960. Their announcement in Billboard (shown here) is dated 2 months later, in September.