One other small detail has surfaced with the two slotted lugs shown in Posts 1188 and 1189 above. It shows on the collar of the lug in Post 1188 but is on the back side in Post 1189.
Some sort of marking is stamped in this location. It is centered down the collar starting from the end, going towards the slotted lug section and consists of three characters that are a bit hard to read: It is either, "S" "_ "Z", or perhaps "5" "_" "2".
Could this be a Manufacturers Code? The size of the font used on this mark is the same as was used to stamp the face of the slotted lug with the Amperage Rating for the lug.
David
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