Set of 9 Tango Red/Black Czech Art Deco Glass Tumblers W/ Sterling Overlay.  They measure 3 1/2" high, and 2 3/8" across tops. Possibly juice tumblers?  The color is nice.  I have not polished the silver.  They date to the 1920s to 1930s and are all in excellent condition with no chips or cracks.  They have a monogramed "RBG"?.