Royal Mail releases eight new stamps in celebration of Queen’s Platinum Jubilee One first class stamp features the late Duke of Edinburgh Platinum Jubilee: Stamps issued to celebrate Queen's 70-year reignRoyal Mail issues eight stamps celebrating her 70-year reign, with photos ranging from 1957 to 2020. Seventy photos for 70 years of the Queen’s record-breaking reignThe monarch’s Platinum Jubilee is on February 6, with national celebrations set for June.