Very nice brandy / cognac warmer.  THIS EXAMPLE IS COMPLETE WITH LID AND CHAIN.  Does have slight tarnish.  Two hallmarks.   Tests as .925 sterling silver.  However it most likely is .900 purity.  I believe it had a felt pad on the base at one time.  Base may be weighted.  Overall, this beautiful sculptured art deco piece weights 250 grams.   Perfect fit for you glass goblet with foot and stem. I've been advised that this piece has a reserviour that accommodates denatured alcohol as a fuel to heat the brandy in glass. 

Hallmark:  "Star"   and "B 374"    circa 1930's