October 9, 2022, day at which the UPU organized a common issue at the occasion of the World Post Day, was a Sunday. This is not the best day for launching a stamp and we preferred waiting a few days to collect a maximum of information around this issue in order to include also stamps that were released after this official date. We were not disappointed and we received a lot of additional information from our friends Kenneth Sequeira (Dubai), Ali Ahmed Med Achour (Algeria), Don Birschel (USA), Enzo Cafaro (Italy), Kenneth Sequeira (Singapore) and others. Thanks to all of them.
So far (the list is probably not complete), the countries having issued stamps with the UPU design include the followings: Belarus, Bosnia Herzegovina, Cambodia, Croatia, Egypt, Fiji (September 22, release date, but official FDC dated October 9), Russia (October 7), Serbia (October 7), Sri Lanka, , Syria (1 stamp, 1 souvenir sheet), Thailand, Tunisia, Turkey. All these countries have issued one single stamp at the date of October 9, 2022, except otherwise stated.
Algeria (October 9, 2022) participated as well but adapted the design.