British Indian Ocean Territory 1968 5r multicoloured, SG14bBritish Indian Ocean Territory 1968 5r multicoloured "Regina Mundi Convent", type 1 overprint, lower marginal block of 4, upper right stamp variety No stop after "O" (R4 4), SG14b. Very fine unmounted mint block of four with full original gum . Neat marginal annotation bottom right in margin does not detract from quality of piece. A rare overprint error and most attractive in this positional form. The Stanley Gibbons catalogue value is 96+. The