I have a 1973 spec sheet which lists the Sprint de Luxe as being Huret or Simplex equipped and having wingnut equipped hubs. Assuming the bicycle has original components, the presence of SunTour derailleurs and standard hex nuts suggests that the bicycle is post 1973. Other items. like the plastic spoke protector, presence of a chainring guard, stem mounted shift levers and safety levers also suggest newer than the previously mentioned dates. It would be interesting to know the date codes on the SunTour derailleurs.

It looks like it may have a kickstand plate in place of a traditonal chainstay bridge. This, in conjuction with the plate style brake bridge, would place the bicycle at lower entry level, similar to a department store bicycle.

FYI, the 1973 MSRP was $135.00 US. It was the better of the two lightweight models imported into the USA by B.M. Lawrence & Company and was also known by the model number M-45. There was a lower M-42 Spint at $115.00 US. These prices seem quite high for the era and level of the bicycle, though they did come with some accessories, as the spec sheet mentions the kickstand and a MAFAC tool kit being included.