1920-37 set mint (less 1934 2½d. though with additional 7½d. and 10d. blocks of four) and used with a couple of additional values, ½d. to 2½d. (9 values) on 1937 envelope to New Zealand and ½d. to 7½d. (9 values) on 1938 envelope to U.S.A., both registered from Nuualofa; 1923-24 2d. Surcharge set mint and used, 2d. on 2/6d. (7), 2d. on 5/- (4) and earlier 1d. on 1924 envelope (faults) registered from Nukualofa. Also 1938 unsurcharged airmail envelope to Australia bearing ½d. pair, 1d. and G.B. 1½d.

Details
1920-37 set mint (less 1934 2½d. though with additional 7½d. and 10d. blocks of four) and used with a couple of additional values, ½d. to 2½d. (9 values) on 1937 envelope to New Zealand and ½d. to 7½d. (9 values) on 1938 envelope to U.S.A., both registered from Nuualofa; 1923-24 2d. Surcharge set mint and used, 2d. on 2/6d. (7), 2d. on 5/- (4) and earlier 1d. on 1924 envelope (faults) registered from Nukualofa. Also 1938 unsurcharged airmail envelope to Australia bearing ½d. pair, 1d. and G.B. 1½d.