1978 ELDORADO BIARRITZ 2DR. MAROON. TOP OF THE LINE CADILLAC, (SUN ROOF) AIR COND, (MaROON LEATHER) CRUISE, SER#6L4758Q260543 IDAHO ALL POWER OPTIONS. $17,500.00 HAS BUILT IN CB.  OLD CAR VALUE GUIDE THAT BANKS AND APPRAISERS USE TO FIND APPROX VALUE OF CARS IS $19,000