BSR 3S Skillets

Bonnie Scott

Active member
I have two BSR (3S) skillets that appear to be marked differently. I'm curious to know if there were two different methods of marking them. Traditionally I have seen them marked by what appears to be by hand but there seems to be a second method that appears to have been stamped by a machine.
Does anyone know if there we as a second method and if so does the one stamped by machine mean it was done at a later date?
Thanks in advance.
http://imgur.com/a/Jdw34
 
I have the identical one with the + and the E. The other may very well be from early BSR automation. If we also saw the one with the A marked something like B, C, and D, it would imply a gang mold for casting multiples at one pour.
 
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