This is a vintage Fostoria “Navarre” etched crystal stemware glass, specifically a champagne flute (or tall sherbet/champagne style).

Key Details:
• Pattern: Navarre (etch #327 on stem #6016 or similar). It’s Fostoria’s most popular etched pattern, known for the delicate floral/vine/leaf design with scrolls and small birds or figures visible in the etching.
• Maker: Fostoria Glass Company (USA). The pattern was introduced in 1936 and produced until around 1982 (with some continuation under Lenox briefly after).
• Style: Clear crystal with a tall, fluted bowl, short stem, and round foot. The sticker on the base (“Fostoria NAVARRE”) confirms it exactly.
• Use: Typically for champagne, tall sherbet, or sometimes as a lighter wine glass. It has a graceful, elegant shape common in mid-20th-century formal table settings.
Fostoria made this pattern in clear crystal (like yours) as well as some colored versions (e.g., azure blue or pink, mostly from the 1970s onward). It’s considered “elegant glass” or “crystal stemware” rather than Depression glass, and pieces like this are popular with collectors for weddings, formal dining, or display.