Ribs/Columns;
DUNCAN & MILLER GLASS CO. No. 51 (OMN)
• AKA: Two-Ply Swirl
Duncan & Miller Glass Company (Washington-PA, Company Operated: 1900-1955), Introduced: 1902 Introduced

• Motifs: (Ribs/Columns), (Panels), (Swirls/Spirals)