Tyrian purple by ancient authors. Not much is known about the subsequent steps, and the actual ancient method for mass-producing the two murex dyes has not yet been successfully reconstructed; this special "blackish clotted blood" colour, which was prized above all others, is believed to be achieved by double-dipping the cloth, once in the indigo dye of "H. trunculus" and once in the purple-red dye of "B. brandaris". The Roman mythographer Julius Pollux, writing in the 2nd century AD, asserted ("Onomasticon" I, 45–49) that the purple dye was first discovered by the philosopher Heracles of Tyre, or rather, by his dog, whose
Edward VII 2d Tyrian plum Edward VII 2d Tyrian plum The two pence (2d) Tyrian plum was a postage stamp produced by Britain in 1910 as a replacement for the existing two colour 2d stamp of King Edward VII. One hundred thousand sheets, totalling 24,000,000 stamps, were printed and delivered to the post office stores for distribution to postmasters. The circulation of the new stamps was delayed while existing stocks of the current stamp were used up so that the change would take effect at one time and the amount of surplus stock of the old value would be kept to a minimum. However following