Tonga 1962 "Emancipation" Official Proof, SGO11/13Tonga 1962 (7 Feb) "Emancipation" Official type O3 overprint, PROOF (x2) in RED of the complete 5x6 setting used to overprint respectively the lower halves (this with "WALLBANK" imprint at foot, on yellowish horizontally laid pair) and upper halves (without imprint, on yellowish wove paper) of sheets of the 2d, 5d and 1s values, SGO11 13. Each shows "OFFICIAI" at R4 2 (and several other repeated flaws), but only the upper half proof has "MAII" at R2