Voigtländer Perkeo (6x6)
There are three models of Voigtlander Perkeo; they are Perkeo I, Perkeo II and Perkeo IIIE, all use 120 film in 6X6 format. The Perkeo IIIE is top of the range and has an uncoupled rangefinder
Folding cameras at that time usually came out the factory fitted with different type of lens and shutter to range as different models. Top model would be fitted with a high class lens and a more advanced shutter, and of course with a high price tag.