Each collection is comprised of five stamps which showcase a range of Vietnamese landscapes and fruits.
Some of the outstanding images are Chua Cau (Bridge Pagoda) in Hoi An which was built by Japanese businessmen during the 17th century, Vietnamese lotus flowers, and peaches - a famous fruit of Fukushima Prefecture.
Most notably, each stamp collection also bears the Vietnamese national flag and the flag of Fukushima city, attached with letters stating that Fukushima plays host to the Vietnamese sport delegation.
Each stamp collection costs JPY920, equivalent to approximately US$8.4, and can be purchased at 90 post offices in Fukushima Prefecture, two post offices in Tokyo, and on the internet.
The 2020 Tokyo Olympics is scheduled to be held from July 23 to August 8, drawing the participation of 11,000 athletes from 206 countries and territories around the world.
For this year’s Olympics, Vietnam have sent a 43-member contingent to the games, including 18 athletes who will compete across 11 sports.
Along with hosting the Vietnamese delegation, Fukushima will also be the host city for athletes from Switzerland.