I am looking for a crown for my 1958 Nivada Aquadatic Antarctic with ETA 2452. Attached pictures of the crown that I need on a different watch. Description Silver crown with wide ribbing (no teeth) and domed top. Diameter approx. 5 mm 0.9 mm thread 2 mm tube Crown height approx. 2.5 mm (The crown has no "protruding tube".) A crown with the Nivada logo (N in a coat of arms) would be nice, otherwise an unsigned one would also be very welcome. I can imagine that early versions had no logo.