This thread still being updated?
I've got some possible dates for B, D and 7 WF sockets. Stamps were found under the black plastic anti-roll/easy read style sockets. Not entirely sure the date those were released
The style seen in this thread
So I was digging through my Stepfather's toolbox again and came across some odd Craftsman sockets. They seem to be early "easy read" sockets using a plastic piece molded to the base of the socket. The smooth ring around the center of the plastic piece says Craftsman USA PAT PEND (very lightly)...
www.garagejournal.com