UB5SBR

front side QSL card, of UB5SBR to IK6BAK, June 13, 1990, CW
rear side QSL card, of UB5SBR to IK6BAK, June 13, 1990, CW
letter envelope QSL card, of UB5SBR to IK6BAK, June 13, 1990, CW