HI I AM IN THE UK AND I HAVE THE DRIVE MOTOR FOR THE EARLY BRASS CAR HORN MADE BY L'AUTOVOX.
IT IS BELT DRIVEN OFF THE ENGINE AND WHEN A BUTTON IS P-RESSED IT ALLOWS AIR TO TRAVEL TO THE HORN THUS NOT NEEDING THE BULB ON THE END OF THE HORN.
SO IF YOU GET A BUYER FOR YOUR HORN BE SURE TO TELL THEM ABOUT ME.
THANKS BOB