What type of lume did Bulova use on their watches back in 1973? I just purchased 2 "identical" model Bulova automatics that have luminous hands and luminous numbers written out on the dial. Both watches were manufactured between 1972 and 1973. What is the content of the lume on the hands and on the dial on these 2 particular watches? Was the lume that Bulova used back in 1973 radioactive? What was the exact name of the lume that they used on these 2 watches? And for how many years is the lume good for in being able to see the time in the dark?
I've attached 2 links below with some close-up pictures of each watch.
Please check out the pictures and tell give me any information that you might know about the lume on these 2 bulova watches. I would like to hear your input on this subject.