Check the listing for details. EXPLORER 50 INTERPLANETARY MONITORING PLATFORM LAUNCH TO STUDY MAGNETOSPHERE. Listed at 2.50 USD. SPACE COVER FOR INFORMATION ON OTHER FIRST DAY COVERS & SPACE COVERS SEE WEBSITE CHRISCALLEFDCFOR MORE INFORMATION ON PAUL AND CHRIS CALLE SEE THE WEBSITE CALLESPACEART INTERNATIONAL BUYERS PLEASE EMAIL ME FOR SHIPPING COSTS AND INFORMATIONINTERNATIONAL SHIPPING is $2.50 for 1 to 4 covers via USPS International First Class. The USPS is not responsible once mail leaves the United States. My policy is that if I ship outside the United States I would do so with your understanding that you are aware I am not responsible for the package once I mark it as shipped in the United States. Thanks. CHRIS***DUE TO THE CURRENT HEALTH CRISIS MAIL IS TAKING LONGER THAN NORMAL, PLEASE BE PATIENT WITH YOUR ORDER.IF YOU HAVE NOT RECEIVED YOUR COVER PLEASE MESSAGE ME BEFORE FILING A CLAIM WITH EBAY.WE ARE SEEING UP TO TWO WEEKS FOR DELIVERY IN THE UNITED STATES AND LONGER TIMES INTERNATIONALLY.***THANKS!