On October 14, 2017, the Russian Postal service issued a stamp dedicated to the Assembly of the Inter-Parliamentary Union, which was held in St. Petersburg from October 14 to October 18, 2017.
On October 10, 2017, the Portuguese Post issued a set of 6 stamps and a souvenir sheet in honour of the 500th anniversary of the Postal Service of the country.
In honour of World Post Day, the Turkish postal administration issued a series of 4 stamps and the souvenir sheet on October 9, 2017. Postmen and horse mail cart are depicted on the stamp of 1.80 lira.