confirming the authenticity and flown status of the metal

Project Mercury

a pioneering orbital complex that became one of the defining achievements of Soviet and Russian human spaceflight

Mir ultimately remained in space for approximately fifteen years

sent directly from orbit by Russian cosmonaut Oleg Kotov to noted astrophilatelist Jacques Bracke

German pure Silver coin „Nebra disc“ philatelic presentation John Glenn confirming the authenticity and flownOfficial philatelic presentation by German post : Nebra disc Contains a stampsheet postmarked first day and a pure Silver 925 coin with a total weight of 18 gram ! Mint condition.