Southend's open toppers never normally carried exterior advertising, but were sometimes decorated for special occasions such as a float in Southend Carnival. Here 373 (WJN373J) is promoting the then current production at the Palace Theatre in Westcliff, "Two and Two Make Sex". We're not sure which year's procession this is - can anyone help?

Photo from the Peter Cackett collection, photographer Mike Farley, taken Southend, Eastern Esplanade