CARL BÜTTNER GMBH & CO. K.G.

The flag is red with white “C.B.” and a white five-pointed star in each corner. Rosanoski identifies Brown’s omission of dots as an error. Al Fisher’s initially pink image was changed to red. The website drawing makes the stars look silver, considered unintentional by Jan Mertens; a real flag on a related mineral-oil firm’s barge has white stars and serifed initials. A flag is also photographed on Biene. Funnel photographs of Admiral and Apatura show the pole angled forward and the starboard lettering readable as if double-sided. The actual flag is not double-sided, as Avalon’s reverse-side photograph demonstrates.

The derivative red pennant has white CB between four five-pointed stars arranged in a rectangle. The initials are serifed and the stars broad-angled. The cited eBay example measured 33 × 85 cm and was stated to be at least forty years old.