5Z4CQ

front side QSL card, of 5Z4CQ to IK6BAK, March 13, 1983, CW
rear side QSL card, of 5Z4CQ to IK6BAK, March 13, 1983, CW
letter envelope QSL card, of 5Z4CQ to IK6BAK, March 13, 1983, CW