KODAK RETINA Ia Type 015 (1951-1954)
This model without rangefinder adds a quick action lever on top.
Number 1: This one has a metric focus scale and an f3.5 Schneider Kreuznach lens. The "N" on the series number signifies that this camera was made for distribution in the Netherlands.
Number 2: This model has a focus scale in feet and an f2.8 Schneider Kreuznach lens.
Number 3: Here the serial number is behind the accessory shoe and the film reminder is in German.
Number 4 is a strange hybrid which already has the internal screws for the cold shoe but still the serial number behind the cold shoe.