I've found an
Agfa Silette Vario Type 3 (~1958) film camera equipped with an
Agfa Color-Agnar 45mm f2.8 lens at the usual flea market for the price of two cups of coffee and a good cream pastry. The camera was in mint condition but the lens very dirty, with plenty of fungus. It has been very easy to disassemble, clean and reassemble the lens but, alas, something has gone wrong and the first film roll has been a total [funny] disaster...
After quite a bit of research on the net I've found some useful information on the lens: it's a 3-element Cooke triplet type and I've realized I had put the inner lens in the wrong way. Loaded soon after another roll and after a bit of suspense here is the second roll.