Check the listing for details. MARINER 10 VENUS MERCURY 1975 SPACE PROBE FIRST DAY COVER * PASADENA. Condition: Used. Listed at 17.00 USD. Here you have a WONDERFUL VINTAGE piece of MEMORABILIA. Please...SEE THE SCAN! This is the envelope and cancelled stamp for the First Day of Issue of the MARINER 10 10 CENT U.S. Postage stamp. The cachet is an image of the Space Probe. The caption reads "SALUTING UNITED STATES UNMANNED SPACE ACCOMPLISHMENTS". The stamp was cancelled at Pasadena, California on April 4, 1975! The envelope measures 6 1/2 inches X 3 5/8 inches and this is in very fine shape! Take it home with you! GOOD LUCK! Please Check Out My Ebay Store for more great memorabilia! I am happy to send this to any country. 1st class air postage will be charged… More excellent packaging and free 1st class shipping here in the United States! THANKS! 060219 ***