DL6CKH

front side QSL card, of DL6CKH to IK6BAK, June 15, 1995, CW
rear side QSL card, of DL6CKH to IK6BAK, June 15, 1995, CW
letter envelope QSL card, of DL6CKH to IK6BAK, June 15, 1995, CW