1900's "Art Nouveau" Vintage Sterling Silver Filigree Glass Lined Liquor Flask

Beautiful "Art Nouveau" Sterling Silver Filigree Glass Lined Liquor Flask . Clear glass is overlaid with sterling filigree that  swirls all around the bottle. Has an "M" inscribed into the front. 

Perfect 

Circa 1900

Stamped 999 / 1000 Fine Silver  #1204

Measures 4.5" x 2.5" x 1".