The flag is undated in Nantucket Signals; the additional painting is labelled 1840–1850, after the stated loss of this Franklin.
Franklin, also called Franklin 1, operated from Nantucket in 1816–1832. John Cartwright owned her initially and in 1819 and 1825; Joseph Hornblower is named in 1828, followed by registration in 1829 and loss in 1832. Agents included Uriah Folger & Co. and John Cartwright.
Keep the explicit scope label independent; no alias or company identity is inferred.