AKG STUDIO MONITOR HEADPHONES.  HAVE HAD THIS HEADPHONES FOR OVER 30 YEARS.  USED THEM SPARINGLY FOR THREE YEARS. ALWAYS KEPT THEM IN SAFE PLACES AWAY FROM EXTREME HEAT AND COLD.  ASIDE FROM MISSING THE COVER (WHICH FELL OFF AND DIDN'T GLUE BACK IN PLACE AND THEN LOST) THEY ARE IN NEAR PERFECT CONDITION.  I USED THEM IN FOH LIVE MIXING AS WELL AS SIDE MONITORING LIVE BANDS.  VERY COMFORTABLE FIT WITH UNPARALLELED PERFORMANCE AND THE SPECIFICATIONS THAT MAKE THESE HEADPHONES A TRUE REFERENCE ACHIEVEMENT. I COULDN'T FIND ANOTHER SET OF HEADPHONES IDENTICAL TO THESE ONES, EXCEPT FOR THE ONES PICTURED ON ADVERTISEMENT PHOTO THAT I INCLUDED WITH THE REST OF THE PICS.  I WANTED TO LIST THESE HEADPHONES AT A FAIR MARKET VALUE AND DIDN'T FOND OR SEE ANY MATCHING SET.  AS YOU CAN SEE ALL IS ORIGINAL, EVEN WIRE SOLDERS ARE INTACT. MAYBE YOU CAN HELP ME TO MAKE PRICING ADJUSTMENTS.  FOR NOW I'VE DECIDED TO PRICE THEM AT $300.  WHERE WERE THIS HEADPHONES MANUFACTURED BACK THEN? I THINK AUSTRIA BUT COULD  BE MISTAKEN.  IF YOU'RE LOOKING FOR A GENUINE SET OF VINTAGE SET OF HIGH QUALITY HEADPHONES, THIS COULD BE ONE OF YOUR LAST CHANCES TO GET THEM, AT LEAST IN SUCH GOOD CONDITION.  ALWAYS TOOK GOOD CARE OF MY SOUND EQUIPMENT.