In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Our very old hot water system has a pilot control made by Janitrol/Surface Combustion. It sends an electrical signal confirming the pilot is lit to a controller that opens the gas valve. The type designation is X O. It has apparently died, as bypassing it allows the boiler to fire. See picture attached.
Anybody know if there is a modern replacement part available? Or if there are any originals floating around?