Yugoslavia 1978 Communist League Congress set of 2 sheetlets each containing block of 9 unmounted mint, SG 1821-22
Yugoslavia 1978 Communist League Congress set of 2 sheetlets each containing block of 9 unmounted mint, SG 1821-22
Yugoslavia 1978 Communist League Congress set of 2 sheetlets each containing block of 9 unmounted mint, SG 1821-22