The flag is assigned to the 1835, 1843 and 1851 sailings and appears in the signal painting.
Spartan is dated 1821–1864 by Loughran; Nantucket Signals records sale to New Bedford about 1863. Owners included ? Jones, Daniel Jones, Samuel Jones, Elisha Swain, David Thane and Frederick B. Chase. Agents included P. & B. Gardner, Daniel Jones, David Thane and Gardner & Chase.
Keep the explicit scope label independent; no alias or company identity is inferred.