Hi Luis
A little bit late to answer, but maybe you still need some advice. I just purchased similar camera (531/2 in fact - the difference being the rangefinder) of the same vintage. I did some research on my unit so I can be helpful, at least to some extent.
Your lens is postwar Tessar?with T coatings, and serial no. suggests late 40s. It's considered the best lens of any Ikonta.
You can find serial no. of your body imprinted on the opposite side of camera name. And the shutter has its own serial no. too. All that can help estimate production date.
As to what it's worth, Ikontas are priced definitely lower than Super Ikontas. If it works and the glass is good, it will probably be worth $150-200.
Hope this helps
Take care
Marek
