Subsequently Mason was selected for the New Zealand national rugby league team and was part of the 1926-27 tour of Great Britain that was marred by player discontent.

[7] Following the New Zealand tour of England Mason returned to Canterbury where he played a further 8 matches for Hornby before receiving an offer from Wigan to join them.

During the 1928–29 season, Mason was part of Wigan's 1928–29 Lancashire Cup, playing at second-row in a 5-4 victory over Widnes in the final at Wilderspool Stadium, Warrington on Saturday 24 November 1928.

[9] He played at second-row in Wigan's 13-2 victory over Dewsbury in the Challenge Cup Final at Wembley Stadium, London on Saturday 4 May 1929.

[1] Mason played at centre in Wigan's 15-3 victory over Salford in the Championship final during the 1933–34 season at Wilderspool Stadium, Warrington on Saturday 28 April 1934.