Pre-1980s Penfold Ace vs today's ball. It's tiny (2.54mm diameter smaller). The R&A allowed these smaller "British balls" until 1990, which cut into the wind better and gave more distance. : r/golf
History — PENFOLD GOLF UK
Penfold Herz: Wie „007“ Sean Connery den fiesen Goldfinger austrickst
Bonhams : A boxed set of 6 Penfold Ace golf balls in pale blue wrappers
Penfold Golf Balls: Another Direct-To-Consumer Brand? | MyGolfSpy