A Gold Medal stamp to celebrate Jade Jones' gold medal win in the Women’s Taekwondo under 57kg will be available to buy from lunchtime.
Royal Mail will also paint a post box gold in Flint to commemorate the teenager's success.
The stamps will be on sale in over 500 Post Offices across the UK, including the Post Office at Church Street, Flint, and Henblas Street, Wrexham.
The 19-year-old from Flintshire showed no fear in the final against the Chinese fighter last night, closing out a 6-4 victory.
Last night's win gave Britain its first ever Olympic medal in the sport and meant Jade is the youngest competitor in Team GB to secure a medal at London 2012.
Royal Mail says the seven post boxes in Wales painted gold to mark Olympic and Paralympic triumphs will remain so permanently.
Hundreds of people turned out, as Paralympic cycling champion Mark Colbourne was given the freedom of his home town.
Paralympic hero Mark Colbourne will be welcomed back to his home town today.