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Features: Trap holes (25), Magic Squares. Player can press buttons to rearrange numbers on card in backglass if these features are purchased: • Press buttons before shooting 4th ball. • Press buttons before shooting 5th ball. • Press buttons after shooting 5th ball.
Manufacturer: Bally Manufacturing Corporation (1931-1983) [Trade Name: Bally]
Date of Manufacture:
Players: April 07, 1976 / 1
Model Number: 1085
Theme: TV Show - Western
Design by: Don Hooker
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Machine Type: Electro-mechanical (EM) 
Notes: The backbox was made with two versions of wood trim around the backglass, one was painted yellow and the other was unpainted, varnished woodgrain. Bingo documentarian Danny Leach tells us the yellow version came first, and as bingos started going overseas, the primary distributor in Belgium realized that promoting the game as 'woodrail' was a successful strategy. Bally changed the trim to varnished wood to help promote the games for this overseas market. This second version is nicknamed 'Bonanza 2'. Both versions have the key lock at the top front of the trim. In contrast, the game in the flyer had its locks on the sides. We notice that the Bally bingo machines that precede 'Bonanza' have side-lock trim while the ones that followed 'Bonanza' have top-lock trim.
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