Isle of Man welcomes in Year of the Ox with triangular stamps The new stamp set was designed to celebrate the Chinese New Year, and marks the first time a triangular shape has been used by any British postal administration 07/01/2021 9:30 am The Isle of Man Post Office is marking the Chinese Year of the Ox, which begins on February 12, with a new set of endearing stamps designed by Manx artist Jay Cover. One of the stamps contains a nod to the ancient myth of the race between creatures to determine the order of the 12-year cycle in the Chinese zodiac calendar – a race in which the rat (which was last year’s zodiac) leapt past the ox to become the first creature in the cycle.