Reardon, known as ‘Dinny’, was only the fifth choice for the Welsh spot at his weight at the 1938 Games in Sydney, but the four fighters ahead of him could not get time off work.
He was an apprentice fitter at Curran’s and his friends there held a collection to help send Dinny on the four-month round trip.
In Sydney, Reardon beat a New Zealander in the first round, then a Canadian to advance to the final.
A Welshman was guaranteed to win gold as Dinny faced off against Maurice Dennis – a Swansea-born fighter who was representing England at the Games.
Reardon claimed the glory to enter Welsh Games history.