Charles Francis Bastable, 1911 Encyclopædia Britannica, Volume 7… (1911)
“ Thus if the standard unit be 1 the higher coins will be 10, 100, 1000, &c., the lower .1, .01, .001, &c. In a perfect system there would be no breaks or interpolations, but the actual currencies described as “decimal” do not show this rigid symmetry. In France the standard unit—the franc—has the 10 franc and the 100 franc pieces above it; the 10 centime below it; there are also, however, 50 franc, 20 franc, 5 franc, 2 franc pieces as well as 50 and 20 centime ones. ”
