Originally Posted by
MRT2
While I appreciate getting something period correct, if all else fails, you could always get a new Shimano Tourney derailleur just about anywhere for about $10.
That's a horrible idea.
Seriously.
Putting a ****ty looking, low quality modern derailleur on a thoroughly "classic" looking bike is the worst thing you can do besides putting a non-functional unit on there. There are literally
(in the literal sense of the word "literal") MILLIONS of other options to choose before putting a current production, modern looking, low quality derailleur on a bike from the early 1970s.