Royal baby George celebrated on stamps THE Duke and Duchess of Cambridge had a very special delivery this week - and now the arrival of their son Prince George is to be commemorated with STG1 ($A1.68) stamps. Isle of Man Post Office is to become the first postal administration to mark the third in line to the throne's birth as they release a sheet of eight stamps congratulating William and Kate. With the inscription "We could not be happier," as the Duke said upon the birth of his son on Monday, the sheet includes four stamps showing the proud father and four of a smiling Kate. A gold-foil special postmark with the words "It's A Boy" will be used to cancel the stamps when the postal tribute is released on August 21 with a limited numbered edition of 500. "We were thrilled to hear the news of the birth of the royal baby, HRH Prince George of Cambridge and delighted to mark the historic occasion with a special commemorative souvenir sheetlet of postage stamps," said Maxine Cannon, general manager of Isle of Man Stamps & Coins. Isle of Man Post Office is sending our unique cover to Kensington Palace, the London home of the Duke and Duchess of Cambridge, together with one for Prince George. We are also sending the commemorative cover to the parents of the four babies who were born on the Isle of Man on the same day as Prince George. Peter Jennings, a fellow of the Royal Philatelic Society, said: "The stamps of King George V and King George VI are extremely popular with stamp collectors. They are collected and treasured. Now is a great opportunity to start a collection of the stamps of the baby boy destined to be the future King George VII.