This is an early 1970's classic, when they were still using the CK-12 brass mic. capsule.  What a sound!  This mic. just kills vocals in OMNI mode with a good class-A preamp...nothing like it! 4 patterns including hypercardioid.  It's sound is basically a C-12 without the tube circuit.  Very nice silky hi end.  The lows are seismic, and it has a slightly forward midrange, but you knew this already.  These mic.s are very hard to find, because AKG used to replace the brass capsules with newer "nylon" cheap capsules whenever you sent one in for repair.  This is S/N 2400, and I have another one up for sale...not a matched pair, but very close! (see my other auctions) I have a shock mount that goes with it.  (not shown)  No cable.  Works perfectly but sold as-is due to age.  (Tracy Korby checked these out for me before I bought them.)