Handed down to me from my father I have the Kodak Retina 1a, with Synchro-Compur on the front. The Lens is: Schneider-Kreuznach 2783439 Retina-Xenar F:3.5/50mm.
I didn't see that option in the article.
How do you figure out the year it was made? The number on the len? (2783439) or the number down on the hotshoe area? (559879)