You are bidding on a Shure Model 520SL Controlled Magnetic microphone.  It has a hi impedance type 99B86 dynamic element.  It comes mounted on a push to talk handle, but no stand.  It is in good working condition.  It should be modified (stand removed and connector added) to make a great harp (harmonica) mike, with its hot element.  Shipping weight is 2 pounds.  Please see my other auctions for more interesting radio and audio items, and tubes.