I learned to play with Dunlop 65s. Individually wraped, they were 1.62” diamater in those days, I think mine were made of surlyn rather than balata because they felt hard and solid to hit. Moving over to the 1.68” ball took some getting used to.

The Dunlop 65 was made to celebrate Henry Cotton’s second round 65 in the 1934 Open Championship at Sandwich and it became the most popular ball of all for many decades. When I looked at these I thought of Henry Cotton playing mixed foursomes with his formidably fiery wife Toots. When he hit into the rough she would teach him a lesson and hit the next alternate shot back to the tee.