Up for bid on ebay, you'll find this 1774 Cellarius Map - Gallia Cisalpina.
According to the listing, Christoph Keller (Cellarius) was an early believer in the power of maps to help sell books. His 'Geographia Antiqua' was so popular that its publication spanned three centuries from 1686 to 1812 and different maps were used for many editions.
"This map comes from a 1774 edition of that work. It shows Italy from just north of Rome and stretches to the Swiss and Austrian borders to the north, Nice and Provence to the west and Trieste and Istria to the east," says the seller. "Prominent features are the Arno river with Pisa and Florence, Perugia, Ravenna, Cremona, Parma, Genoa and the Italian lakes. However there is no Venice because of its post Roman creation. The map is guaranteed to be over 225 years old."
