The flag is undated in Nantucket Signals and appears in the signal painting.
Zone operated from Nantucket in 1827–1847, then was sold to Fairhaven. Earlier owners are illegible or unknown; James Athearn owned her in 1839 and Levi Starbuck in 1843. Agents included S. & J. Mitchell, Athearn and Starbuck.
Keep the explicit scope label independent; no alias or company identity is inferred.