This model was the last of the folding Retinettes, and was manufactured from 1951 to 1954.
Unlike the earlier type 012 model, it has a full length chrome top plate, like that used on the Retina I type 013.
They were fitted with a Schneider Reomar 50mm f/4.5 lens in either a Prontor-S, or SV shutter. This model was also available with an f/3.5 or f/4.5 Angenieux lens in a Kodak shutter, like the one below.
Here is a link to a copy of the Retinette instruction manual on Mike Butkus' excellent website.