NATIONAL GLASS CO. No. .617 (OMN) nat/north
• AKA: Concave Columns; Pressed Coinspot
• National Glass Company (Northwood Works) (Indiana-PA, Co. Operated: 1899-1904), Introduced: 1901 Introduced

• Motifs: (Circles/Balls), (Ribs/Columns), (Beads )