This information was taken off the top of the red fluted glass lens. Maybe one of the older fire guys would actually know if the number was just for the glass and who is the manufacturer of these lights? I have two of these in the same shape, the glass has some chips out of them but no holes or broken off junks. I have no idea if there is any interest or not willing to sell 1 or both. I personally removed these off a 1963 San Francisco Snorkel truck they were sending to the graveyard. The bases will need work, but the lights still operate.