Pol. Ec. del Med. Evo. III (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

The Travels of Marco Polo

The Gold Florin of Florence was worth a fraction more = 9s. 4·85d. Sign. Desimoni, of Genoa, obligingly points out that the changed relation of Gold ducat and silver grosso was due to a general rise in price of gold between 1284 and 1302, shown by notices of other Italian mints which raise the equation of the gold florin in the same ratio, viz. from 9 sols tournois to 12. [4]