ZERSSEN & CO.

Lloyd’s 1904 shows the flag diamond extending throughout; the 1912 portrayal almost reaches the edges.

FOTW’s illustration follows Brown 1926 but originally used darker blue, changed by Rosanoski to agree with the other images. The Clearfile version derives from Flaggenbuch 1928.

The flag was also reported on a small tray in FOTW’s unidentified material. The Esso, Flaggen & Schornsteine and Brown references supply the company’s funnel and flag.

The US Navy funnel has white edging outside the red ring: the effect is a red ring on a white circle.

Jorge Candeias’s FOTW image is labelled a variant without a stated source. The same flag appears under Nordfriesische Reederei on Biedekarken and under Zerssen in the online 1912 Lloyd’s collection.

The funnel and flag are documented through the meineseefahrt.de cap-badge pin material.