Century 21 © 1989 Universal.
Released in April 1989. The industry’s first machine to play BGM upon hitting 2 matching jackpot symbols.
CONSOLES:
Super Famicom (jul.21, 1995; "Big Ichigeki! Pachi-Slot Dai-Kouryaku 2 - Universal Collection [Model SHVC-AUVJ]")
Machine's picture.