The 24second tourbillon are really interestiing too, as the "Secret" version of double tourbillon.
For me, this watch (excluding of course Invetion cause she has no dial), have a problem with the dial, i can't imagine that this dial are of 300k€ watchs, i found in the better case that the finition of the dial are good for a 10k€ watch like the grey 24sec dial, or white "secret" double tourbillon dial...
On the other, i just found dial Ugly, on the blue version of the dial of the double tourbillon, is catastropfic, this melt of métal + mother of pearl in half circle, even is really hard to do...