Chronogram is a phrase of which the roman-numeral letters (C,D,I,L,M,V,X) express a date when added together. (e.g. LorD haVe MerCIe Vpon Vs = 50+500+5+1000+100+1+5+5=1666). The order was irrelevant, the sequence IV stood for 1+5=6 and not for 4. On coins, the numerals are indicated in exaggerated capital Roman letters within the legend. Chronograms were particularly popular in the Baroque Age although counting the numerals was tiresomeone and one had to struggle through obscure statements in scholars' Latin.