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TONGA - 1899-1913 COVERS GROUP Includes 1899 'On His Tongan Majesty's Service' envelope to Australia with 'Tonga Government Frank' crown cachet & transit cds's, 1900 registered cover to USA with five stamps, 'Nukualofa' & transit cds's, 1903 registered cover to USA with 2½d & 5d tied by 'Vavau' cds's, plus oval 'Registered at Vavau' cachet & arrival cds, 1914 cover to USA bearing 7½d (SG 48) tied by violet 'Vavau' cds. (4 covers)