Got home one of my epic 2CV truckette loads of classic cycling stuff yesterday, nearly all off-topic as the haul consists mostly of cross cycling items, most of which I am going to get rid of, anyway.
One thing, however, struck me as rather interesting: One of the NR rear
derailleurs is stamped "PAT 11".
I have one marked "PAT 72", so I know that the "seven" slants, just like a slash. I also have one marked "PAT 81", on which I can see that
the "one" doesn´t. On the one found yesterday it says "eleven", no doubt.
I have so far assumed that the figures were years; so what is all of this, then?
Regards,
Toni Theilmeier, Belm, Germany.