DOYLE & CO. No. .58 DOT (OMN) stems by Doyle and Company (Pittsburgh-PA, Company Operated: 1855-1891), mid 1880s Introduced
• AKA:
Ferguson Inverted Thumbprint (Metz 1, p 202); Ferguson Inverted Thumbprint – Faceted Stem (Unitts 1, page 40)
NOTE: Ref Unitts p40 (top row, right)
NOTE: Large circular optic elements with just 6 full rows of optic.
Shape:
Contributor:
Shape: Stemware
Contributor: Pat CLark, Walt Williams, Ellaina Miller, Matthew Cox
Shape: Research Update
Contributor: Sid Lethbridge
Shape: Pattern Comparison
Contributor: Sid Lethbridge