Thanks, Vlad, Alfa and Pierre. Note there is a mirror behind the cameras which doubles the real number!

Concerning alfa's question: the Sonnar is a "home made" conversion of a bayonet one. Interesting: it's a wartime one, and it is mounted on a 1e. That seems correct, chronologically speaking. The seller told me he found all that "as is" twenty years ago.
About the other lens, it's a 1947 2/5cm ZK (certainly fake) mounted, for the moment, on a Zorki 1a/1b.
As for the Leicas, I will make a photo (it will be enough!).
Amitiés. Jacques.