In fact the 100mm (3.9") gun was the same on all mounts, the difference between models was evident by the position of the operators cabs, the Model 53 had 2, the model 1968 had only one on the left side. The Compact (Model 1968 II in the drawing above) was fully automatic, and was unmanned, and was an export model only, as the Marine National did not use it.
all Information in the text is an ugly copy past from Navweaps.com but it explain things
BTW. for the Model 1968 II
explain this then:
100 mm Model 1968-II on Frégate Courbet (F 712)
photo from "Navweaps.com" some got it from "Marine Nationale Photograph"
100 mm Model 1968-II on Frégate La Fayette (F 710)
The access ladder on the front is removable, giving this mounting a clean look
Marine Nationale Photograph
BTW. as you can see on the Model 1953 - 1964 drawing. I have posted 3 top view. the on I am going for personally is "A" but it's 28px width the gun is 29px width "B" and "C". But "B" and "C" is giving difficulty with the symmetry for the 100mm gun that are 2px thick here. What shall I do?