Russia 1973 - Soyuz 12 USSR 1973 – signed by Lazarev & Makarov – Certificate – Spaceflight

For sale: an interesting collectible from the Soviet spaceflight history:
Original Soyuz 12 first-day cover from the USSR, dated 1973, with the original signatures of the two cosmonauts
• Vasili Grigorjevich Lazarev (V. G. Lazarev) – Commander of Soyuz 12
• Oleg Grigorjevich Makarov (O. G. Makarov) – Pilot/Cosmonaut
The letter bears a Soyuz 12 special stamp as well as a Moscow first-day/special postmark.
Particularly interesting: The letter comes with the original certificate from the Soviet foreign trade organization “Mezhdunarodnaja Kniga,” Philatelic Department, Moscow. It explicitly confirms that the first-day letter was personally signed by cosmonauts Lazarev and Makarov.
Thus the provenance or signature of the item is contemporaneously documented.
The piece and the certificate are in age-appropriate condition. The certificate shows age- and storage-related creases. Please refer to the photos for the condition.
An interesting original for collectors of spaceflight, cosmonaut autographs, Soyuz, USSR/Soviet philately, and space mail.