"PORTA" HAMBURGER REEDEREI GMBH.
image by Klaus-Michael Schneider, 30 March 2009
Mitchell’s Fisser & van Doornum card labels the funnel “Portia Hamburger”, presumably a misspelling of the company name: Rosanoski found no ship of that name. No line drawing accompanies it.
The flag is red with a green lozenge touching the edges and bearing a white capital P.
Rosanoski considers P465 apparently miscoloured: the funnel should be black as in P464. Whether the diamond spans its width depends on the width of the funnel.