Mark variant 1

The irregular shield, top pair and lower pair of visible characters retain the source's two-row arrangement.
Low confidence comparison reconstruction.
Maker's mark comparison reference
Compare 1 source-linked mark variant recorded under A & J Zimmerman Ltd (Arthur & John Zimmerman). These are reconstructions for comparison, not source photographs or authentication evidence.

The irregular shield, top pair and lower pair of visible characters retain the source's two-row arrangement.
Low confidence comparison reconstruction.
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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