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Short desc: rectangles
Description: In use 1960-1990 Users of this watermark: Colombia (23 stamps, 1987-1990), Costa Rica (2 stamps, 1989), Panama (1 stamp, 1960), Singapore (10 stamps, 1968), Sudan (3 stamps, 1969), Thailand (76 stamps, 1961-1976) Show with all usages Used by 3 stamps of Sudan: (See all uses as list) 12/27/1969 2p 12/27/1969 4p 12/27/1969 65m All are issue=ILO 50th perf=14.5 |