Polo Mints: Snow Stamp In December 2009 the entire UK was covered by a fresh, white blanket of snow. To take advantage of the fresh, white snow we produced a tactical ambient idea for a fresh, white mint. A "Polo snow stamp". When stamped in thick, fresh snow it left near perfect replica of the iconic white mint. Advertising Agency: JWT, London, UK Executive Creative Director: Russell Ramsey Cre..