9mm, 4″ barrel.   Marked  {S/42} on the toggle and dated “1937” on the receiver ring.  Finished blue with checkered walnut grips.  Retaining considerable blue overall with some honest areas of holster wear. Very nice grips showing only minor evidence of handling.  Super bright bore with sharp rifling.  Mechanically excellent.  All matching except the magazine. One grip unumbered the other mis-numbered.