GD Yankee(that term is used down here & I assume you know the definition):

As I've said before, many before me have provided very good sources, but thanks.

Originally Posted By: GD Yankee





Note the "M" common stamp with the following E. Funk drilling owned by Mark Baumgarten, whose father Robert Baumgarten penned a few articles for GGCA:



For now I think both were some type of sub-contractor to the tube/pipe maker who performed some type of psuedo-final task like polishing the tubes, cleaning the ribs or something of the like. If anyone has any other German examples with the "J", "L" & "M" stamps, I'd ask that you post.

Kind Regards,

Raimey
rse