The thesis of the article is that this plague had far reaching and long term effects, mainly negative, and that many historians do not seem to realize just how impactful it has been. I must say, after reading the book, "Justinian's Flea", some years ago, that I have always thought that it was an underestimated cause of some profound changes in Byzantine economics and society. Our present situation may be demonstrating that widespread disease may be more influential, in many areas, beyond the demographics of illness. The author of this study is Peter Sarris from Cambridge. Below are three of the coins from the reign of Justinian. The small coin on the upper left is a tremissis (1/3 of a solidus) with, on the reverse, an image of an angel, or Victory. It weighs 1.4 grams and is Sear 149. The second gold coin is a solidus and another version of the angel/Victory, weighing 4.4 grams. it is Sear 140. The large bronze is a large flan follis of Justinian, Anno xii and the large M indicating the value of 40 numia. It is Sear 163 and weighs 20.7 grams. Any thoughts or coins of Justinian that you have much appreciated.