The SWL QSL Museum Ceylon Asia Ceylon Broadcasting Corporation - 1970, 1971, 1972, 1974(2)  QSL Contributed by Istvan Hegedus (Hungary) Ceylon Broadcasting Corporation - 1971  QSL Contributed by Dan Greenall (Canada) Ceylon Broadcasting Corporation - 1972  QSL Contributed by Istvan Hegedus (Hungary)  Ceylon Broadcasting Corporation - 1974 QSL Contributed by Istvan Kiss (Hungary) Ceylon Broadcasting Corporation - 1974 QSL Contributed by Václav Dosoudil (Czech Republic)