The ornamental design for a combined dummycontrolunithandset, with cord and plug, for a mobileradiotelephoneset, as shown and described.
FIG. 1 is a left side, top and front perspective view of the dummy handset,
and plug with cord, of a combined dummy control unit handset, with cord
and plug, for a mobile radiotelephone set showing my new design;
FIG. 2 is a left side, bottom and rear perspective view thereof;
FIG. 3 is a front, top and right side perspective view thereof; and,
FIG. 4 is a right side, bottom and front perspective view thereof.