Is My Sidereus Nuncius a First Edition?

The points of issue

• Quarto, 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 etchings (copperplate), not woodcuts, and signature C, which carries the bulk of them, is made up of two half-sheets — evidence that the plates were printed separately from, and later than, the text
• The great internal point is the drop-title on B1 recto: Galileo first set the Jovian moons as 'Cosmica Sydera' for Cosimo II, and when the Grand Duke's preference arrived mid-printing the reading was corrected to 'Medicea Sydera' by a small printed cancel slip pasted over the heading
• Many Venice copies carry the slip and some do not; both belong to the first edition
• Fine-paper copies were presentation gifts and carry between two and seven corrections in Galileo's own hand

How to confirm the first-printing statement

Publishers stated first printings differently by era. The decisive tells are a printed “First Edition/First Printing” statement, a number line whose lowest number is 1 (Random House ends at 2), or a dated first printing with no later printings listed. Paste your copyright page into the number-line decoder.

How to verify your copy, step by step

1. Find the copyright page — the verso (back) of the title page.
2. Confirm the first-edition statement — look for “First Edition,” “First Printing,” or the publisher’s equivalent wording.
3. Check for a number line or dated printing — the lowest number present is the printing; a dated first printing with no later printings listed is the tell.
4. Verify this is the UK true first — not a later-market or reprint edition.
5. Rule out a book-club edition — a blind-stamp on the rear board or a jacket with no printed price marks a book-club copy.
6. Photograph four things — the front cover, spine, title page, and copyright page — the standard record for identification.

The dust jacket

For a collectible first edition the dust jacket matters as much as the book. Confirm the jacket is present and unclipped — the printed price should still be at the corner of the flap (a clipped corner or a price-less flap can indicate a book-club issue). First-state jackets can differ from later ones in the cover art, blurbs, or review quotations; where a specific first-state jacket point is known for this title it is noted above.

Binding & format

Where multiple bindings exist, the hardcover trade issue is usually (but not always) the precedence copy — confirm against the points above. Later printings often show cheaper cloth, thinner boards, or simplified spine stamping. A simultaneous signed or limited issue, when one exists, is a distinct state from the trade first.

Is this the true first?

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 than the Venice black-on-white), and it reproduces the uncorrected 'Cosmica Sydera' drop-title that the Venice copies correct by cancel slip. It has long been called a piracy, though Linda Hall Library notes recent evidence that Galileo knew of it and that it may reflect his manuscript intentions. Either way, a Frankfurt 1610 copy is a same-year reprint, not the first edition.

Telling it from reprints & book-club editions

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 'pepiodis' for 'periodis' on line 15 of the title, a backward-tilted V in VENETIIS, an ampersand whose top loop is closed up with ink, a P in 'Priuilegio' with a stray leftward stroke at the foot, and the letters p and i touching in a way letterpress cannot produce but a digital reproduction can. Both known forged copies passed through Marino Massimo De Caro.

Frequently asked questions

Is my copy of Sidereus Nuncius a first edition?

A first edition of Sidereus Nuncius by Galileo Galilei (Tommaso Baglioni, Venice) is identified by: Quarto, 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.

How do I tell the first printing from a later one?

Check the copyright page. A stated first edition, a number line ending in 1, or a dated first printing with no later printings listed is the key. 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.

Is the book-club edition the same as the first?

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 'pepiodis' for 'periodis' on line 15 of the title, a backward-tilted V in VENETIIS, a

I have a first edition of Sidereus Nuncius — what should I do?

First, document the copy: photograph the copyright page (the number line and any edition statement) and the dust-jacket flap — an unclipped, priced jacket matters. Confirm the points of issue above against your copy, and use the free First Edition Checker to decode the printing. To sell, the author’s collecting guide covers the market. And if you are clearing books in the Albuquerque area, the New Mexico Literacy Project offers free pickup, any condition, and makes sure collectible copies are identified rather than discarded.

Glossary

First edition

Every copy printed from the first setting of type. Collectors usually want the first edition, first printing (the true first).

First printing / impression

A single press run from that setting. The first printing is the earliest and most desirable; later printings are still the first edition but not the true first.

Number line (printer's key)

A row of numbers on the copyright page (e.g. 10 9 8 7 6 5 4 3 2 1). The lowest number present is the printing — a line including 1 marks a first printing (Random House deliberately ends at 2).

Points of issue

Specific physical details — a stated edition, a number line, a typo, a jacket state — that identify the true first printing.

Book-club edition (BCE)

A reprint made for a book club. Tells include a blind-stamped dot or square on the rear board and a dust jacket with no printed price. Not the true first.

First thus

The first appearance of a particular version (first paperback, first illustrated, first U.S. printing) — a first of that kind, not the first edition of the work.