Darlot 220mm f4 - Can design like Cône centralisateur

Here a wonderful Darlot petzval lens that share the same improve optical design than cône centralisateur lenses.

Focal lenght is around 220mm at f4.

2 inside rings to set aperture are present. Flange include (still on my camera). I’ve use it to shot 5x7 and even close 8x10 portrait