Check the listing for details. Lionel 394-37 ROTARY BEACON TOP WITH CORRECT DIMPLE BULB. Condition: New. Listed at 9.95 USD. LIONEL 394-37 ROTARY BEACON TOP / HOUSING WITH ONE CORRECT TYPE 461-300 SCREW BASE DIMPLE BULB. BRAND NEW PART. THIS IS A FRAGILE PART, PLEASE DO NOT PUSH BEACON PART DOWN ON THE BULB WHEN INSTALLING AS IT COULD BEND OR BREAK THE SMALL PIN INSIDE TOP OF BEACON THAT SITS ON THE BULB. UNFORTUNATELY THEY HAVE TO BE THIS LIGHTWEIGHT IN ORDER FOR HEAT FROM THE BULB TO MAKE IT ROTATE. ROOM TEMPERATURE LEVELNESS, PROPER ADJUSTMENT OF VANES IS NECESSARY "PUSHING VANES ALMOST CLOSED" TO GET BEACON TO ROTATE ALL PLAY A PART IN BEACON WORKING. I'VE BEEN REPAIRING TRAINS FOR OVER 30 YEARS WE CAN SUPPLY HELPFUL LIST OF INSTRUCTION HITS ON GETTING THESE TO WORK, JUST ASK AND WE WILL EMAIL YOU A COPY AFTER PURCHASE.LIONEL 394-37 ROTARY BEACON TOP / HOUSING WITH ONE CORRECT TYPE 461-300 SCREW BASE DIMPLE BULB. BRAND NEW PART. THIS IS A FRAGILE PART, PLEASE DO NOT PUSH BEACON PART DOWN ON THE BULB WHEN INSTALLING AS IT COULD BEND OR BREAK THE SMALL PIN INSIDE TOP OF BEACON THAT SITS ON THE BULB. UNFORTUNATELY THEY HAVE TO BE THIS LIGHTWEIGHT IN ORDER FOR HEAT FROM THE BULB TO MAKE IT ROTATE. ROOM TEMPERATURE LEVELNESS, PROPER ADJUSTMENT OF VANES IS NECESSARY "PUSHING VANES ALMOST CLOSED" TO GET BEACON TO ROTATE ALL PLAY A PART IN BEACON WORKING. I'VE BEEN REPAIRING TRAINS FOR OVER 30 YEARS WE CAN SUPPLY HELPFUL LIST OF INSTRUCTION HITS ON GETTING THESE TO WORK, JUST ASK AND WE WILL EMAIL YOU A COPY AFTER PURCHASE.