The derailleurs were from France? I wonder where the design for the derailleur originated from? The then defunct Simplex? Or was it Huret, because you saw Sach/Huret labels on many of their stuff back then Sure does not look like any Huret I've ever seen, more like a moderned up Simplex to me. There was Sachs/Maillard too and Sachs/ Sedis. Sachs was kinda doing a "Spidel" thing I guess....
It's interesting how Modolo was able to sell that brakeset to Edco and Mavic too, so you can't tell what brand you're looking at if the silk screened on labels were scratched off. I'm looking for brake pad alternative too for the Mavic versions I have. No way those hard Modolo "sintered" pads are going to ever touch my dark anodized Mavic and Wolber rimmed wheels I built up last year!
Thing with Sachs is, their groups were made of such a hodge podge of really different brands that crossed borders too, so there sseems to be no focus on the makeup of their groups. Spidel was easier to figure out as it was all French stuff.
JMOs

Chombi