NATIONAL GLASS CO. No. 911 (OMN)
• AKA: Ribbed Spiral
• MAKER: National Glass Co. 11 [Model Flint Works] Albany-IN (Co. Operated: 1899-1902), Introduced: c1902 Introduced
• NOTE: Vases in this pattern have concentric circles in the base. The similar Imperial Ripple vase has a star in the base.

• MOTIFS: Ribs/Columns, Squares/Rectangles, Swirls/Spirals