





The presumed original flag is red with a white diamond bearing black J.F.B. The historical website repeats this livery on both its nineteenth- and twentieth-century pages, although Rosanoski considers the later page should show the added corner lettering.
The later flag adds black St. and D.G. in the upper corners. Lloyds 1904 and 1912 show slanted letters in the diamond but upright field lettering. The 1904 source uniquely uses Bräunlich among the German sources Rosanoski consulted.
Jorge Candeias worked from an unclear, unidentified source: red, the white lozenge and black lettering were certain, but the letters were not. He read J and F with confidence and tentatively H as the final letter, with SDG suggested above. Rosanoski proposes Lloyds 1904 as a possible origin but notes that its upper letters are neither slanted nor simply SDG.
The coloured postcard agrees with Flaggenbuch 1934, the Massary and Lloyd cards, and broadly with US Navy 1961. The Navy version has minor differences Rosanoski considers probably insignificant. Mitchell gives S1510 a narrow black funnel top, probably from Melilla.
Esso and Flaggen & Schornsteine assign this livery to the Lübeck company.