This watch is a gen
Movement and case are clearly gen. NO DOUBTS !!
See Swan Neck spring, micrometric screw, Incabloc and lyre spring, teeth and beveled of the wheels, wheels screws, brushed gear train, quality of the bridges and OP engraving, nice polished jewels contours.....
For the case see the cushion shape that goes until the caseback in the inner part of the lugs. No rep case has this shape beteewn the lugs
ALE