Originally Posted By: smilinjohn
While searching for Merkel's German website, I stumbled onto "Quality Level Markings.....'Q1', since the early 1960's, and 'S', until 1960; also, Level 1, & 2, used in the GDR".


:)John


These quality level marks were discussed at some length on the main BBS forum. I, again, stumbled onto the former thread, while looking for something else. Yet, I failed to jot down the link. frown
:)John

We're only responsible for the effort, not the outcome.