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Most of the sockets are 5A,B,C,D and one of them is 9B and it is non Los Angeles.
Thanks.
One more question. What was the source of the set?
I'll explain where I'm going with all this curiosity.
EDIT: If you're just catching up, z, you can ignore the following. Irrelevant.
Looks can be deceiving, of course, but the tools looked they could be original to each other. Not onesy-twosied, as Roy alluded to. The whole set, including the box, has that vibe.
While it may be odd to see "PLVMB LOS ANGELES" era marked sockets in a "PLVMB MADE IN U.S.A" era box, the production was not decades apart. As Don alluded to, the opposite - with later "PLVMB MADE IN U.S.A." tools put inside a seemingly endless supply of older "PLOMB LOS ANGELES" boxes, was certainly true, and well known. But the weirdness doesn't end there. Not every 3/8-drive speeder fits in every 3/8-drive box, which is maddening, and indicates some strange sources.
Within that context, who knows how long they were still using up old stock LA tools when the newer MADE IN U.S.A. boxes were introduced.
I'm not arguing the box is original to the set. I'm just saying I don't find it terribly implausible that it could be. Four years (from 1935) is a pretty long time for old stock. That would give me pause - if not for that '39 socket.
All I'm saying is that if your source was the basement of an older gentleman's estate sale, not another collector on eBay, I might not be so quick to separate the tools from the box.