U.S.S. Cuttlefish US Navy Submarine SS-171 April Fools Day Cover. Has an April 1, 1935 U.S.S. Cuttlefish ship cancel for Portsmouth NH. Colorful cache with sailor reacting to an April 1st order for mail clerks to change the slogan on their cancel 3 times a day and change color each time. Fun little bit of humor. The artwork is signed "G" Please see photos.