The shifter clamp has been moved up at some point in time. Could "1879" be a Huret date code? 1979 would fit in nicely ....
Crankset is a Stronglight TS Bis. Hope mrs non-fixie will find the 50/40 rings small enough for L'Eroica ...
25.8 Laprade seatpost and a Selle Royal Strada saddle:
1980 SunTour hubs, laced to Mavic Module "E" rims:
Found no brand name on the pedals, but they look very nice, say "Made in France" and "09 79":