Under their shirts, many had their blood types tattooed onto their left upper arms. They were veterans of the Waffen-SS, who had gathered at the ferry house, a popular Hamburg destination.

Former German SS Generals Paul Hausser (left) and Kurt Meyer ("Panzer Meyer") chat during a two-day reunion of SS members in Karlsburg, Germany in July 1957.

At one (or more) of the shows, fans spotted a merch t-shirt that appeared to have an SS "sun wheel" on it, with a cartoon Danzig in the foreground. Notably, the sun wheel itself dates back to ...