Need help identifying Delta models so I can replace the fixtures?

[Bilacky]

I just bought a house. The bathroom shower fixtures look like the have never been replaced. I need help identifying the shower fixture for the master bathroom and the shower/tub fixtures. I know they are delta fixture but don’t know the model numbers. The house was built in 1989.

 

[GReynolds929]

Old Delta 600/700 series with ball, springs and cups not a cartridge.