Maker's mark comparison reference

Isaac Speer maker's marks

Compare 1 source-linked mark variant recorded under Isaac Speer. These are reconstructions for comparison, not source photographs or authentication evidence.

Source location statements: Chicago, IL
Source date statements: (b.1809 - d.1879) Active c.1842 - 57, as Speer & Cosper in 1852, as I. & E. W. Speer c. 1861 - 1869

Mark variant 1

Isaac Speer: I.Speer; line reconstruction. — Line reconstruction

Isaac Speer: I.Speer; oxidized reconstruction. — AI-assisted oxidized reconstruction

Source-recorded mark text: I.Speer

I. SPEER remains inside one long narrow punch contour with no nested relief border.

Low confidence comparison reconstruction.

Sources and comparison limits

www.925-1000.com source reference

Maker labels and date or location statements follow the cited source records. Similar names across source collections have not been merged. Compare the photographed mark and the complete object before relying on a resemblance.

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