Multi Pattern AKG Stereo Mic. Great condition, and a very flexible recording mic. Comes with case and all original hardware. Think Neumann SM-69, only its an AKG.
 
http://lcweb2.loc.gov/master/mbrs/recording_preservation/manuals/AKG%20C422,%20C34,%20C33%20Stereophonic%20Condenser%20Microphones.pdf