This is a good sounding RCA veracoustic MI-6203B low impedance ribbon microphone.
I installed a new ribbon and 6 ft. cord with XLR connector, everything else is original right down
to the grill cloth. It comes with desk stand as seen in photos. These have the same ribbon and motor assembly
as the RCA 77D and like the 77D it has multible patterns.
RCA MI-6203 B
RCA veracoustic microphone
RCA mi-6203 B