Very solid camera, not so little IMHO, viewfinder I think could have some sort of coating, because green looks "greener", kind of semi-polarizing effect, very pleasing.
I don't like the lack of sharp edges on the viewfinder, so I always use a Vidom-like variable viewfinder from Walz, ever, with 50mm lens too.
Not very silent. I was used to Kiev-contax design and its "swoosh" and now I'm using Zorki 1 with its "fluup".
My 3a sounds a loud "schcklack".
The best thing of fed 3a is the lens attached to it: Industar 61...colors from c41 rolls come out saturated as good slides! And with a loupe you can test its zharpness..
Very nice looking.