Circles;
NATIONAL GLASS CO. No. .510 (OMN)
• AKA: Bull's Eye and Button
National Glass Company (Riverside Works) (Wellsburg-WV, Operated: 1899-1904), Introduced: C. 1900
• NOTE: ID updated by Sid Lethbridge, 2017.
• Motifs: (Circles), (Arches/Crescents), (Buttons)