Mark variant 1

The long rounded rectangle and the five-character sequence retain the photographed reading direction and open-letter construction.
Medium confidence comparison reconstruction.
Maker's mark comparison reference
Compare 1 source-linked mark variant recorded under Robert Ensko Inc. These are reconstructions for comparison, not source photographs or authentication evidence.

The long rounded rectangle and the five-character sequence retain the photographed reading direction and open-letter construction.
Medium 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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