4K2_4K4BAT

front side QSL card, of 4K2/4K4BAT to IK6BAK, May 15, 1993, CW
rear side QSL card, of 4K2/4K4BAT to IK6BAK, May 15, 1993, CW
letter envelope QSL card, of 4K2/4K4BAT to IK6BAK, May 15, 1993, CW