Nice find, whatever it is!
Speaking of the Mafac brakes, the bridge wire in the photo looks kind of iffy. At least you can still get those....
__________________
1971 Paramount P-13 Chrome
1973 Paramount P-15 Opaque Blue
1974 Raleigh Professional Blue Mink
1991 Waterford Paramount
Holland Titanium Dura Ace Group
Holland Titanium Ultegra Triple Group