NATIONAL GLASS CO. No. 510 (OMN)
• AKA: Bull's Eye and Button
• MAKER: National Glass Co. 15 [Riverside Works] Wellsburg-WV (Operated: 1899-1904), Introduced: c1900 Introduced
• NOTE: ID updated by Sid Lethbridge, 2017.
• MOTIFS: Circles/Balls, Arches/Crescents, Buttons