mike macallum james toney michael watson floyd mayweather robinson was 50 years ago right....well robinson.
I dunno, Tommy wasn't really a counter puncher as such. He tended to lead off because in most of his fights he had height, reach and handspeed advantage, unless he was trying to knock them out. When you have such an imposing jab as Tommy did, you tend not to be a counter puncher. As for the past 50 years that's a helluva time period to cover. I personally have no idea. My knowledge really starts with the 1980s.
Sanchez and Gomez are good shouts as are Toney and Hopkins. McCallum too. I will add another couple, not top dog but very worthy of mention. Eddie Mustafa Muhammad when on was a supreme counter puncher. As was Eusebio Pedroza, a vastly underrated boxer. On a lesser level Edwin Rosario was a fine counter puncher before going power silly and losing his previous technical excellence.
Wilfredo Benitez dethroned Carlos Palomino by decision, counterpunching off the ropes. When I think of a counterpuncher, he's the first who comes to mind. (Very difficult to dethrone a dominant champion on points by counterpunching.)
He's a fantastic example for sure. Truth be told i cannot believe Jose Napoles has not been mentioned yet. He to me is the epitome of the consumate counterpuncher. Unbelievable at the game.