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the printing doesn't appear to be engraved (it looks flat, and has gobs of ink in places)
It is engraved, and looks very obviously engraved from the scan. Perhaps you need to examine this with at least a 10x magnifier. "Gobs of ink" can happen with engraving for a variety of reasons.
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and it's much wider than the other small queens with it
I assume you mean the stamp margins and not the designs. Even wider ones exist as do very narrow ones with both sides cutting into the design. Perforating machinery was not perfect in that era.