The last of bulb manufacturers (that I know of) is the Royal bulb company. For the longest time, I had know idea who marketed these next tins since there are no external maker names but some time ago I was able to put a name to the tin. These came in 2 color combinations that I am aware of. I don't have any information that tells me if this is evolutionary or colors representing particular bulb packaging combinations. I personally lean toward the latter as this is common practice even today. These generally fall between $15-$45.






........Dave
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Looking for old, rare, auto light bulb tins