Hi Mark, you were reading the Campag timeline WHEN?! True dedication, or should I say addiction?
Grunert were manufacturers of rims in the GDR, and earlier, as far as I know. Well-loved stuff, that. Can send you address of far more knowledgeable chap than myself, but would prefer off-list as he doesn´t know about this yet.
Toni Theilmeier, Osnabrueck, Germany.