
The flag device is described as a white ring divided by a white cross, with parts of the ring omitted. António Martins-Tuválkin interprets it as a stylised “Æ”, combining the company’s initials. Brown shows a larger emblem with a shorter middle arm on the sinister side. A photograph of City of Amsterdam dated 12 May 2007 demonstrates use by a managed vessel.
Historical qualifications remain; no exclusive fleet-wide use asserted.