[12], 458, [32], 83 [i.e. 81], [1] pp. Title-page printed in red & black with copper-engraved device; occasional diagrams & other cuts in the text. (4to) 11¼x9, modern vellum, new endpapers. Second edition in Italian.

Rare, untrimmed large paper copy of the second edition in the original Italian of Galileo's masterwork, first published in Latin in 1632 as Dialogo sopra i due massimi sistemi del mondo. This large paper copy measures 28 cm. high, as opposed to the 24 cm. of most copies (the two copies listed by the RLG Union Catalog, at Brown and Stanford, both measure 24 cm.), and the margins are quite wide.