Starting taking photos as a child my first "real" camera was a Revueflex B which I got when I was 14 or 15 years old, a labeled Zenit B, selled by Foto-Quelle.
About 4 years ago I started collecting russian cameras, I only wanted to have one Zorki 4 and maybe one Zorki 1 to see the roots of the Revueflex (that already is in my collection).
Now I own about 100 russian cameras and the collection is growing :-)
I sometimes also sell duplicates of my collection and can do CLA. All my cameras are CLAed and in good working order.