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This cultural positioning differentiated the brand from foreign tobacco companies operating in China during the early 1900s

Yep usually, cleaning, buffing, or bleaching wipes out nearly all discoloration

Later, Hartley et al

The entire cast obviously cared about their roles, right down to the smallest parts (as frequently happened in those days, veteran character actor John Boxer as the amiable policeman attempting to comfort Boy Barrett in his cell, and John Bennett who in the opening episode of Porridge was the prison doctor who asked Fletcher if he had ever been a practising homosexual as the bloke in the pinstripe, make vivid impressions without being included in the cast list at the end)