Celebrate His Majesty King Charles III’s 78th birthday in true royal style with this official Australia Post Postal Medallion Cover. Released to mark the occasion on 14 November 2026, it features a striking 3D medallion alongside the two commemorative stamps that capture the King in the beautiful grounds of Balmoral Castle and Highgrove House — photographed by renowned portraitist Millie Pilkington.

Strictly limited to just 1,600 covers, this elegant release pairs the special medallion with official first-day-of-issue postmarks and presentation, making it a refined keepsake for royal collectors and anyone who appreciates a touch of regal charm.