DOYLE & CO. No. 21 DOT (OMN) stem by Doyle and Company/Pittsburgh-PA (Company Operated: 1868-1891), mid 1880s Introduced

• AKA: Bennington Inverted Thumbprint (Metz 21, Page 20)
NOTE:

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Glass Display
Shape: Research Update
Contributor: Sid Lethbridge
Glass Display View
Shape: Photo Needed
Contributor: Database Team