Need help identifying a oyster perpetual

[alley1]

Traded a new two tone rolex for Dad's watch. About twenty yrs ago, I replaced the strap and acrylic crystal. The original crystal was the "bubble" type. And the strap had rivets on the side of each link.

According to my dad, he bought it in the early 60's. I'm hoping to have the watch overhauled...new dial, arms and tune up.

As far i can remember, I've always loved this watch. I'll past it on to my son one day.