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Maker's mark comparison reference

Helen Louise Porter Philbrick maker's marks

Compare 1 source-linked mark variant recorded under Helen Louise Porter Philbrick. These are reconstructions for comparison, not source photographs or authentication evidence.

Mark variant 1

Helen Louise Porter Philbrick: Porter on the upper line with uppercase H L P on the lower line; line reconstruction.
Line reconstruction
Helen Louise Porter Philbrick: Porter on the upper line with uppercase H L P on the lower line; oxidized reconstruction.
AI-assisted oxidized reconstruction

Porter on the upper line with uppercase H L P on the lower line.

High confidence comparison reconstruction.

Sources and comparison limits

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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