The source assigns B340 from 1831 to the end of the vessel’s career, with a small tail visible in the painted example. B661 has no specified date.
Barclay was a Nantucket whaler in 1819–1856, when she was condemned. Named owners include Jonathan Barney, Daniel Jones, William Barney and John C (?) Shaw. Agents included J.J. Barney & Co., Griffin Barney, William B. Rotch & Co. and John H. Shaw, the last during 1843–1852.
Keep the explicit scope label independent; no alias or company identity is inferred.