His last two seasons for Camberwell produced 154 wickets @10.25 This compares well to his overall Grade average of 532 @15.11.
Nash was a great bowler but was never selected in the SS. In the season of 1937-38 Nash was easily the best performing bowler in grade cricket.
It was felt because he bowled some bouncers at the MCC in 1936-37 his card was stamped and although the best allrounder in the country he did not make the 1938 tour. I think he was a victim of the hysteria about Bodyline which made fast bowling a dirty thing in the late 1930s.