Sentence:  The Alcatraz pelican <WSD>cachet</WSD> turned out to have a unique history of its own which had been lost over the years. Master <WSD>cachet</WSD> designer and artist John Coulthard (1903-1966) of 17 Elm Street Modesto, California, was the creator of the stamp. 
Meaning of the word marked with <WSD> tags:  A commemorative stamped design or inscription on an envelope, other than a cancellation or pre-printed postage.