I have a old camera at least I think that it is old. My Grandfather gave it to me. He got it off a dead German soldier in WW2. On the front lens it has the letters A G C. It also has the word Pronto. Also it was made in Germany as it has around the front of the lens C.Friedrich, Munchen Croygon-Anastigmar then several F stops. On the side it has the word Dolly. As it was found on a dead German officer it has the Nazi stuff on the front cover.
Unfortunately, most of what you give us relates to the lens rather than the camera. What film size does it take? Is there a camera manufacturers name on the camera body or perhaps inside the camera?
I did find one reference to a "Dolly" Camera which was a 1930's 3 x 4 cm (127 film) folding camera. It had a value of
$20-50 back in the 1980's.
The lens appears to be probably some kind of triplet or other consumer grade item. Perhaps you could post an image of the camera?