He got out in the mid 70's he was in for a long time 15 ,20 years .So the bust must have been late 50ish ,I do not know how long they could drag it on back then,so it may have been mid 50's just as easy.
And still who held that much power with Chin to stop him from killing this guy that just killed a BOSS....

Cackling like a banty Rooster.

I love this," "I just love this."