2 Galileo Galilei first editions are documented on this shelf, from Sidereus Nuncius (1610) to Dialogo sopra i due massimi sistemi del mondo (1632) across 2 different publishers. Each linked guide gives the points of issue that separate a true first printing of that Galileo Galilei title from later printings and book-club copies — the publisher and year to expect, the number-line or edition-statement conventions, and the tells that show up in online listings.

Identification only, per the house rule: no prices and no appraisals here. Checking a Galileo Galilei copy in hand? Type the title into the First-Edition Checker or photograph the copyright page with Snap & Sort.

Sidereus Nuncius — 1610 · Tommaso Baglioni, VeniceQuarto, Venice, 1610, under the imprint of Tommaso Baglioni; Linda Hall Library, following the census work on this book, records that the actual presswork was done by Niccolo Polo and Roberto Meietti and puts the edition at about 550 copies — roughly 30 on fine paper and roughly 520 on ordinary paper, with about 350 copies reaching the Frankfurt book fair that same year. The lunar images in the Venice sheets are…. Venice: Tommaso Baglioni, 1610 is the true first, and there is no UK-versus-US question: the original language is Latin and the Venice quarto is the only original. The trap is a second 1610 edition printed at Frankfurt by Zacharias Palthenius within months of the Venice sheets. It is distinguishable at a glance: a smaller octavo format, lunar and asterism images re-cut as woodcuts (rendered white-on-black rather…. No book-club apparatus applies to a 1610 quarto; the live tells are facsimiles and forgeries. The 1964 facsimile is the documented source of a giveaway in the De Caro forgeries: a plate reverse-engineered from a scan carried an inked blotch at the foot of the title that exists only in the facsimile's reproduction, where a brownish area had gone black. Nick Wilding's published tells for the forged copies include….
Dialogo sopra i due massimi sistemi del mondo — 1632 · Giovanni Battista Landini, FlorenceQuarto (about 216 x 157 mm), imprint 'In Fiorenza, per Gio. Batista Landini, 1632', with Landini's woodcut printer's device on the title, 31 woodcut diagrams and illustrations in the text, italic type with shoulder notes in roman, woodcut and factotum initials, and the errata leaf Ff6. Two points recur in every careful description and are the practical tests. First, a small printed cancel slip pasted into the…. Florence: Giovanni Battista Landini, 1632 is the true first — the Italian original, printed under a formal licence from the Inquisition, presented to Ferdinando II de' Medici on 22 February 1632, and suppressed within months, with the work placed on the Index in 1633. Two later editions must be named because both are collected in their own right. The first Latin is Systema cosmicum, translated by Matthias…. No book-club edition exists for a 1632 quarto. The reprint traps are the 1635 Strasbourg Latin Systema cosmicum, the later collected editions of Galileo's Opere, and modern facsimiles. Within the 1632 edition itself, the frequent absence of the della Bella frontispiece and of the page 92 cancel slip reflects how the book was distributed rather than a later printing — but for that same reason a frontispiece….

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