Here are  details about this type of vase:
Manufacturer & Origin: This vase was produced by the L.E. Smith Glass Company, which was founded in 1907 in Jeannette, Pennsylvania, USA.
Material: It is made of black amethyst glass, a distinctive dark purple glass that appears black until light is passed through it, revealing its amethyst hue.
Design & Era: This specific style, often referred to as a "trophy vase" or "loving cup," features two handles and a scalloped or ruffled rim. It's a hallmark of Art Deco design from the 1930s.
Variations: While your image appears to be a plain version, some L.E. Smith black amethyst trophy vases of this period feature embossed designs, such as the "Dancing Nymphs" or "Snake Dance" pattern.
Collectibility: L.E. Smith glass, particularly the black amethyst pieces, are sought after by collectors of vintage and antique glassware