THIS IS A PHOTOFACT(Repair info) FOR 1957 LINCOLN WITH MODEL 78BL ( HHK-18805-A ) RADIO, ALSO 1957  MERCURY WITH MODEL 78BM ( FEK-18805-D ) RADIO. IT CONTAINS SCHEMATICS, INTERNAL VIEWS OF THE RADIO, PARTS LIST AND DESCRIPTIONS. THIS IS A ORIGINAL AND NOT A COPY. THIS IS WHAT YOU WILL NEED IF YOU EVER NEED TO MAKE REPAIRS ON YOUR RADIO.  IT IS IN VERY GOOD CONDITION. BUYER PAYS S.H.