Details
cover -- ½d. to 4d. (six values) on 1907 (Dec.) 4d. G size registered envelope to Germany; ½d., 1d. 2d. and 2½d. on 1901 (May) 4d. H2 size registered envelope to Germany; 1d. block of twelve on 1908 (Mar.) envelope (225x125mm.) to U.S.A.; 2d. and 10d. on 1900 (Oct.) envelope via U.S.A. with New York Exchange label; all four registered from Nukualofa