Those Voigtlander cameras, the Contaflex and similar West German cameras show how West Germany lost position as the major camera country for manufacture.
I don't mean they were bad cameras in terms of performance rather that they'd taken the wrong direction with 35mm cameras and relying on leaf shutters and the restrictions the shutters imposed.
In East Germany you'd had the first full professional system cameras the Praktina, also the lower spec and older Exacta system, as well as the Contax/Pentacon SLR all with focal plane shutters, all with a wider range of interchangeable lenses and from many manufacturers.
Then you look at the early Japanese SLR cameras coming into Europe and particularly the US at the end of the 1950's they mirrored the East German approach but with slightly better engineering and more importantly better lubricants.
I have some interesting Focal Press camera books 1959 to early 1960's these list the higher end 35mm, MF a, and Sub miniature cameras available that year, essentially short extracts from the famous Focal Press Camera Guides. What's interesting is the cameras listed that you never see now, poor sales, even poorer reliability. They also shows the trend towards Jpanese cameras.
Your Bessamatic is great I hope you use it. I still use early 1960's Pentax cameras as well as cameras and lenses from before WWI, and then through to today.
Ian