Coolness, thanks for the Triple 8 info. The more I look at this frame, the nicer it looks, The lugs are filed nicely, "mostly" smooth shorelines, fastback seat stay treatment, etc. There's only one bottle cage mount so I imagine it might be mid eighties at the latest? I will be the first to admit I know nothing of Merciers.
The retrofrictions slipped right on like they were made for it, and will be a permanent addition I believe.
Now component suggestions? I imagine this had a decent group, maybe Campy possibly Sachs Huret? No clue on my end. As nice as retrofrictions surely are, I can only imagine how nice it would shift with some Cyclone M-II on it? That's usually my go to group for bikes I "like" to ride. It's a pity I don't have much of anything for French components, aside from some low end older Huret stuff that's in suspect condition anyway. I also don't have the patience to piece by piece a group.,,,,BD