Original vintage advertising poster for a water sports exhibition - Interboot 9th International Boat Exhibition - on Lake Constance Bodensee in Friedrichshafen from 26 September to 4 October 1970 featuring a bold graphic design of stylised orange and white sailing boats with a propeller in front of a boat in the foreground bearing the title Interboot on the sail above the bold white text below on the blue sea background. Large size. Very good condition, folded as issued, minor creasing, minor staining. Country of issue: Germany, designer: unknown, size (cm): 120x84, year of printing: 1970.