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#3
10-05-2008, 02:03 AM
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Bob...I'll look for the book you mentioned as I do find these interesting. The brass pin tubes with the top seal do look real early. They are WD11 tubes. There are a couple of them I found in a box that are unused and 5 or 6 used looking ones. All of the others don't have brass pins except for one with very short pins.
I think the book would be great to read! Thanks for all the info 
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