The camera is not worth as much as it should be - it's the very first Minolta (named) and it does use film which you can buy now. The lens is a Tessar copy, and the camera is more or less a copy of a Zeiss Ikonta, which model I can not say precisely, but probably something like a 630/16. The main problem with the camera is the lack of lens coating and the very soft glass used for the front element - which also tends to discolor with age.
I'd value a mint and perfect boxed specimen with original paperwork at anything up to $500, but a normally used one with no box, no instructions, could be as low as $100. A realistic price would be $150-250 depending on condition.
The postwar versions have a single coated lens, but they are still not as valuable as 1950s Zeiss Ikonta or Voigtlander Bessa models, which are considered the best folding rollfilm cameras for continued use with colour film today.