2 Game Module: Breakout + Sprint One © 1977 Atari, Incorporated.
Released in September 1977, selling at an MSRP of $2295.
This is the first instance of a single arcade cabinet employing two monitors, although in this case it was not for the same game (that would be introduced by Atari later with their game Subs). It is also a predecessor in design to Japanese Versus cabinets that place two monitors in a single cab with the players facing away from each other, although those involve the same game.
Also available as "2 Game Module: Avalanche + Super Bug".
Machine's picture.
Machine's flyer.