By the late 1960s I Was Lord Kitchener’s Valet was creating Carnaby street /Swinging London merchandise for tourists in much the same way Fillmore & Avalon posters & postcards were being reprints and sold on Haight street in San Francisco.
This is both a postcard and also a joke do not disturb sign.
Condition : New / Unused but with minor storage wear. Perforated Push out intact. dated 1970