9. A 17th-Century Celestial Atlas
Along with books, maps are a popular item to find at the antiquarian book fair. The book featured above is one of the most sought-after celestial atlases in existence. Produced by Dutch cartographer Andreas Cellarius in 1661, Harmonia Macrocosmica is priced at a whopping $395,000.
Considered Cellarius’s magnum opus, this map was made to illustrate competing theories of celestial mechanics, or how the solar system worked. The universe’s heavenly bodies are depicted in vibrant colors throughout 29 extremely detailed, hand-colored, double-page engraved plates in the book. The images take theories put forth by great thinkers and scientists like Ptolemy, Tycho Brahe, Nicolaus Copernicus, as well as lesser-known figures such as Aratus of Soli, and present them in an accessible way through images.
