Check the listing for details. MCS ESL-249 K73N LOW FILTER TOGGLE SWITCH 3212 STEREO RECEIVER. Listed at 15.37 USD. EBAY AUCTION rustynailaudio The Worlds Marketplace for Vintage Audio Parts MAKE AN OFFER!!! AUCTION ITEM: MCS ESL-249 K73N LOW FILTER TOGGLE SWITCH 3212 STEREO RECEIVER No Service Manual info available...Provided all the information we have... #PLEASE READ: MY EBAY STORE IS SIMPLY A SOURCE FOR YOU TO FIND VINTAGE AUDIO PARTS... I'M JUST AN AVERAGE GUY TRYING TO MAKE A DIFFERENCE IN A VINTAGE AUDIO PARTS WORLD... WE SEARCH THE WORLD TO FIND THE PARTS WE HAVE... OUR PRICES REFLECT THE COST TO PROVIDE THESE PARTS.... CHECK OUR FEEDBACK, WE ACCEPT MOST BEST OFFERS... WE SELL ALL OUR PARTS "AS-IS" & "UNTESTED" (UNLESS NOTED IN ITEM DESCRIPTION)... rustynailaudio The Worlds Marketplace for Vintage Audio Parts ITEMS ARE IN GOOD CONDITION...KNOBS WILL SHOW SIGNS OF USE/WEAR...REFER TO SERVICE MANUAL FOR YOUR UNIT TO VERIFY EXACT POSITION FUNCTION...