According to Wikipedia NL the Harlette was built as a 123cc and 173cc two-stroke at the Puch factory in Austria for Harley-Davidson importers in France, Italy and Belgium and were produced from 1925 to 1928, and that in France they were also sold as Harlette-Géco because they were sold to Gerkinet & Co. in Jeumont.
However, Bretti Brothers differ somewhat, telling us that MAS produced the Harlette as a fourstroke in 1930. Further information here: MAS Harlette
Sources: wikipedia.nl, Bretti Brothers, Tragatsch p155.
