Bally computer poker ?

[B_S]

Picked up three machines for dirt cheap

They came with a manual and spare parts
Know nothing about them  seams like the internet doesn’t also  other than 1 or two posts

Got a manual with them not sure what machine it goes to tho

they say Bally computer poker

Does anyone happen to know anything about these machines?

Here’s a photo of two of them the third one is Rusty and I consider it a parts machine

Anyone ever see/work on these ?

The rough date I come up with is 1975

[shortrackskater]

So you have two Bally 21's and one Bally Draw Poker, if I'm reading that correctly?
Can you please post photos of the insides of the two machines?
These don't come up often here at all. Technically I think they're like a Bally electro-mechanical but with a lot more features to display the cards. WRONG... 
Once you start working on them, please create a separate post for each.
Hopeful some other more knowledgable members will chime in here. 

[B_S]

Only one of the 21’s

Here are some more photos of the inside it it