REEDEREI MANFRED PREUKSCHAT K,G.
image contributed by Klaus-Michael Schneider, 13 April 2009
The flag is white with a thin red saltire and a central white lozenge edged red, bearing a serifed P. The FOTW account calls the letter black, but Rosanoski states that the cited 1957 source gives a blue letter shaped as in P579. Its dark shade explains the apparent black in the scan.
Mitchell’s funnel appears to support the use of dark blue, although no line drawing or vessel is identified.