Orient is a great 20 hole game with an entry into a whole new world of features: solid state!
That's right, in 1967 Bally was using solid state in a production game!
The solid state component is a 'white-button' feature - a whole separate game that will allow you to play by alternating sinking even and odd numbers.
Very cool, especially as you have to pay attention to the main Mystic Lines game underneath!
Backglass (modified to say Bamboo):

Cabinet:

Playfield:
http://bingo.cdyn.com/machines/bally/orient/resources/pf-orient-1.jpg