The watch has been aquired 1972. Norvina is a word mark of Schnurr, Pforzheim/Germany, registered 1958.
The movement must be a AS 1977-2, according to some pictures I saw on the Internet. There is also a similar AS 1977-2 INT. Does anybody know who manufactured these AS-movements?
Movement size approx 18mm x 15 mm (length/width)