very small olivine and pyroxene blebs (most in the range 5-10 μm)

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

8 x 12 inches in size

Crew-Signed • Four MIR Onboard Postmarks • Approximately 8 × 10 Inches

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

German pure Silver coin „Nebra disc“ philatelic presentation John Glenn very small olivine and pyroxeneOfficial 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.