Post offices around Japan are selling stamps to mark the 30th anniversary of Emperor Akihito's enthronement.
There are two designs available, both included in sheets of 10 stamps. One image features a crane and a turtle, and the other chrysanthemum flowers. The motifs are based on kimonos worn by the Emperor when he was young.
One sheet costs 820 yen, or about 7-and-a-half dollars. Post offices will sell one million sheets nationwide.
Japan Post has also issued a book that contains a sheet of the stamps and photos of the Imperial couple, as well as explanations about the designs.
People lined up at a post office in central Tokyo on Friday morning to get their hands on the memento.
A 69-year-old man who bought the book says he will treasure it with his family.