NOS Antique 1934 Stromberg ignition co condenser electrical auto Truck part Vtg!NOS Antique 1934 Stromberg ignition co condenser electrical auto Truck part Vtg! New in original box!!! found this online See if there is resisted continuity between in and out or if there is zero connection. This looks likely to be to old to be a radio interference supressor, and if it isn't that it is likely a simple gap as Rich says. Idea is that if spark has to jump a big gap to get to the little gap at spark plug, the extra voltage will be good