the Sugino Mighty Compe crankset is original to the build and suggests 1972-1973 when a shortage of French components forced Gitane to source foreign-manufacture parts

Richard Hallett - World Champion Cycles in Albuquerque, a French bicycle dealer and historian - opined that gold painted Gitanes of this era = the scarcest color

Check the Normandy hub body stamping near the "Normandy" legend and you may find a date code - please share your findings with the list