Battlezone © 1981 Atari, Inc. [ren. Atari Corp. in 1984]
Later version of the game that removed the original periscope and raised the monitor to a more normal position to improve visibility to non-players and improve ergonomics for players who could not reach the periscope.
See the original "Battlezone [Upright model]" for more information about the game itself.
Open Screen model.
Released in June 1981, selling at an MSRP of $1495. Rarest version, only 100 units were produced.
Atari confidential doc.