I have a never-installed, 1960's vintage rear seat speaker switch for sale. This is the style of switch that mounts under the dash. I know you remember these. It has the three positions of "Front-Rear-Dual". Comes in the ORIGINAL PACKAGE. with instructions. The price is $24, INCLUDING shipping anywhere in the U.S. I'm not set up for PayPal, but I welcome your personal check or a money order. Thanks for looking. John