Voigtländer Perkeo I

This is a medium format folding camera. The lens is a Voigtländer Vaskar 1:4.5/80.
The shutter is a Prontor-SV. The camera uses 120 film.

Shutter works fine at 1/25 and above, but a bit slow, see measurements:
1/300 -> 1/200
1/100 -> 1/75
1/50 -> 1/45
1/25 = 1/25

I personally never go slower than that so worked fine for me, I shot many rolls through it.
See example pictures.