THIS ORIGINAL HORN BUTTON WE BELIEVE TO BE OFF A 1940 CHRYSLER.  IT MEASURES APPROX. 6 IN IN DIAMETER AND APPROX. 5/8 OF AN INCH THICK.  NO APPARENT CRACKS.  THE BACK IS MARKED WITH THE NUMBER 2.  WE ARE NOT SURE, BUT THIS MAY BE A PART NUMBER.  #857762.  DO YOUR RESEARCH.  THE PLASTIC PAINTED AREA DOES HAVE SCUFFS AND SCRATCHES.  THE CHROME HAS SLIGHT PITTING.  THE CLOISENE APPEARS TO BE IN GOOD CONDITION.