Belgium 1920 Olympics set of three with Specimen ovpt and punch hole, mint nh (a little amount of gum loss on the 5c and 10c), fine (Image)

Belgium 1920 Olympic set of three IMPERF., mint hinged, very fine and scarce (COB € 1’350) (Image)

Belgium Olympic group, incl. 1920 Olympic set of used on pieces, two covers/cards with special Olympic machine cancel, 1964 Tokyo deluxe imperf. min.sheet and 1971 Munich proof in grey and black on glossy paper and imperf. single (Image)