Cosmonauts Kaleri, Krikalev, Volkov, German astronaut Klaus-Dietrich Flade, Signed Flown Cover Mir 92 Soyuz TM-13 flown space cover signed by cosmonauts Alexander Kaleri, Sergey Krikalev, Aleksandr Volkov, German astronaut Klaus-Dietrich Flade. Serial Number 042. Certified by General Director, General Constructor's NPO "Energia". You. P. Semenov (signed in black ink). The seal of NPO Energia presented. It says: " it is certificated that this envelope was delivered onboard Mir orbital complex, cancelled there by onboard postmarks and recovered to Earth by the crew of "Soyuz TM-13" transportation vehicle." Excellent condition. Size of the sheet 29.5 cm x 21 cm. Total 220 flown covers with certificate were issued and delivered from Mir Space Station, as presents for officials, momentum for cosmonauts and people who work for space program. Authenticity guaranteed.