As Raimey says, the Sauer is a model 280E, also known as the Model 14. The gun was purchased from Abercrombie & Fitch in 1931 by a very famous American industrialist for a lady. The Sauer may have been ordered by VL&D but it was sold by A&F. Abercrombie & Fitch completed its purchase of VL&D in August of 1929 and continued to market the VL&D guns in its catalog for several years.
Compliments of Griffin & Howe, Inc.

Bob Beach