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anidel
indieross
I have done a bit more research and I think the rear mech is a ‘77 RD-7100, EX was the year after so it’s either an RD-7100 or RD-7200 from velobase and pics on google it’s hard to tell them apart.
Which would make sense as it came off a ‘78 Batavus Professional Columbus SP.
@anidel yours looks like it was French thread and no hubs which is why you got it for cheap.
The Batavus has braze on cable guides hence no clip on cable guides in the set.