Art Deco Sterling Marcasite And Glass Filigree Link Necklace German

A lovely and timeless sterling silver, marcasite and glass necklace from the 1920's.  The necklace is adorned with a filigree cutout style pendant with a polished black glass cab.  The pendant is decorated with marcasites and a flower in the center.  The chain is 24.5 inches long and is decorated with lovely filigree links.  The clasp as well as the pendant are marked sterling and there is an additional mark that is most likely GERMANY.

Condition:  In excellent/very good condition with some patina that I have left unpolished.  There is a rough spot on the back of the glass cab (see photo) and one missing marcasite stone.