Fenton Indigo Blue Carnival Glass Tumbler in 'Grape and Cable' Pattern

This is a vintage carnival glass tumbler, likely manufactured by the Fenton Art Glass Company, featuring the classic 'Grape and Cable' pattern. The piece is crafted from pressed glass with a deep indigo or cobalt blue base color, finished with a striking iridescent shimmer. This iridescence, known as 'carnival' finish, displays a spectrum of metallic hues including turquoise, gold, violet, and green when caught by the light. The exterior decoration consists of a high-relief embossed design depicting clusters of grapes hanging from textured vines with large, detailed serrated leaves. The tumbler stands approximately 4 to 5 inches tall with a slightly tapered cylindrical form and a smooth, polished rim. Based on visual inspection, the glass appears to be in very good condition with no apparent chips, cracks, or deep scratches visible on the primary decorative surface. The iridescence remains vibrant and consistent, which is a key indicator of quality for this style of glass. While many versions of this pattern were produced by Northwood, the specific color and molding characteristics are consistent with Fenton reproductions or mid-20th-century revivals. The craftsmanship shows careful attention to the mold detail, particularly in the individual grape spheres and leaf veining. This style of glass originated in the early 20th century (1900-1920s), though popular patterns were frequently reissued in the 1960s and 70s as collectables.