The stamp collection has one stamp designed by artist Pham Quang Dieu of the Vietnam Post, with blue being the main color. A stylised number 50 representing the 50 years of the UPU International Letter Writing Competition is featured on the stamp along with the UPU logo and the globe which has five colours representing the five continents.
The design is intended to symbolise the unity of children across the globe in participating in the competition.
In 1971, the Universal Postal Union and UNESCO launched the UPU International Letter Writing Competition. Each year, the competition will take on a different topic. After 50 years, the competition has become an annual event, attracting youngsters all over the world.
Vietnamese children have participated in the competitions since 1987, bringing home two first, two second, six third and five consolation prizes.
The stamp "Celebrating 50 years of the UPU International Letter Writing Contest" has a face price of VND4,000 and is officially available on the postal network from October 9, 2021 to June 30, 2023.