MONTSERRAT 1980 (VARIETY) 5C MALAY APPLE OFFICIAL BLOCK WITH OVERPRINT DOUBLE
5c Malay Apple gutter block x 6 with first column featuring variety 'O.H.M.S.' overprint double (light and positioned diagonally). Second column normal and third with a partial additional overprint. Unusual and scarce. Fine cancelled-to-order (as issued). SGO17a; SCO20var