Checked the book "Les Matériels de l'Armée de l'Air, tome 1, MD450 Ouragan" (Sébastien Guillemin, uitg: Histoire & Collections) and this leads to the following: prototypes: 01, 02, 03 preserie: 1,2,3,4*,5,6,7,8,9,10,11**,12,13***,14**** (all carried reg on tail and nose except 13, 14) *: strictly no...