Covers very kindly sent by L.P.S. from Sukhumi in Abkhazia.
In past, only Russian stamps were used on international mail outgoing from Abkhazia (see e.g. here). Since this year (2018), Abkhazia starts to use own stamps for the international mail, similarly to South Ossetia or Artsakh. These are probably among first examples of covers sent from Abkhazia using Abkhazian stamps on international mail.