 This paralleled the abandonment of the word "POSTAGE" on many United States stamps, as the United States ceased to issue revenue stamps.The last such item replaced was the 2 cent postal card on November 1, 1958.In 1928, the Zone issued a definitive series inscribed "CANAL ZONE POSTAGE" depicting various persons involved in the construction of the canal, as well as a 5 cent value showing the Gaillard Cut.