(2d.) on 10 pfg. with overprint variety ".GR.I 1d.", surcharged with wrong value and with stop before "G" and no stop after the "G", used with two-line "RABAUL NOV 16 1914", slightly toned, lower left corner perf added, otherwise a fine and attractive example of this major rarity of British Commonwealth philately, certificate RPSL (1973)