Vintage Franka Rolfix Folding Camera German-made w Prontor-S Leaf Shutter

Description

Camera imprints
* Front of camera shows the word "Rolfix"  on the leatherette external covering.
* Back of camera shows the words "Franka" and the phrase "Made in Germany US-Zone"  on the leatherette external covering.
* The camera lens displays the origial Gauther logo (AGC); the company is now called Prontor.
Lens:  it displays "2319084 Schneider-Kreuznach Radionar 1:4,5/105
Dimensions in cm when closed: 16 x 7.5 x 3.2
Family-Owned; this camera was purchased and owned by my father who must have acquired it after serving in WWII.  This June is the first time the case has been opened since I aquired it sometime back in the 70s.
I am not knowledgeable about cameras. But, a
ccording to Camera-wiki.org:
"
The
Franka
Rolfix
was a series of self-erecting
folding
cameras for type No.
120 film
rolls. It was launched in 1935. The series ended in 1954. All Rolfix cameras were designed for "full" medium format 6x9cm, but several variants had the option for 4.5x6cm (half-frame)image format or the 6x6 image format. The 1954 models Rolfix I E and II E even had a built-in uncoupled
rangefinder
."