The Russian "Soyuz TMA-19M” delivered to Earth several letters.
This letter was written by Russian cosmonaut Aleksey Ovchinin and addressed to Sergey Rodin. Aboard the International Space Station the letter was marked with the following seals: the “Russian Post. Board of ISS. Russian Segment” round board post mark and the “Russian Segment of International Space Station” board souvenir seal both dated June 18, 2016, the day when the Russian Soyuz TMA-19M spacecraft undocked from the ISS, as well as with the “ISS” octagonal board souvenir seal. On June 22 the letter was sent by registered mail from Russian cosmonaut training center to the addressee.