(1) The world-famous purveyor of fine teas is celebrating its tricentenary this year.(2) Now, having been informed by the Diary of the forthcoming Turpin tricentenary , he is busy planning another bash.(3) Sikhs in the Indian state of Punjab celebrate the tricentenary of the Sikh holy book the Guru Granth Sahib.(4) If you want fireworks for the tricentenary , by all means that can be arranged.