Some very good choices here. Over 60, there are a lot of good players. Over 70, not so many. Danny and Bob Vanover have to be two of the best old timers.
The best I ever saw at a ripe old age had to be Jimmy Moore. He could run 100 balls when he was 80, and would still gamble with youngsters (and beat them!). He played in one of our Hard Times pro events when he was over 80 and finished in the money.
For tournament play, no one has yet matched Onifrio Lauri, who won a major 9-Ball tournament at Beenie's poolroom in the late 60's. He was 69! and ALL the young guns were there. Eddie Kelly, Ronnie Allen, both Richies (Florence and Ambrose), Jersey Red, Shorty, Ervolino, Cornbread, Blackie and many more.
On a bar box, Clyde Bowles from the Northwest has got to be around 70 and he is showing no signs of letting up. Bunny Rogoff from Vegas won the Super Seniors when he was over 70, and was still gambling at the local bars. It took a strong bar table player to beat him.