Identification points are listed only where two independent sources agree. Last reviewed 22 Oct 2026.
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No quarto of Julius Caesar appeared in Shakespeare's lifetime. It was first printed in the First Folio of 1623 (Mr. William Shakespeares Comedies, Histories, & Tragedies), published by Edward Blount and the Jaggards, as The Tragedie of Ivlivs Caesar; Wikipedia, its First Folio article and Folgerpedia all say so. The Folio text, thought to have been set from a theatre prompt book, is the only authoritative text. A complete First Folio is a large folio volume. The play is also offered as leaves taken from a broken copy, and these should be checked for leaves made up from the Second Folio of 1632.
A genuine 1623 First Folio names "Isaac Iaggard, and Ed. Blount" with the date 1623 in the title-page imprint, and its colophon states that it was printed at the charges of W. Jaggard, Ed. Blount, I. Smithweeke and W. Aspley.
How to read it
Read the full guide to Isaac Jaggard and Edward Blount first editions, decade by decade, and check your copy's copyright page against it. Our number line decoder reads the printing from the row of numbers.
We have not yet confirmed the issue points that tell this first impression from later ones. Until we do, compare your copy's title page and copyright page with the publisher, place and year above: any later printing or edition statement means it is not this one.
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Isaac Jaggard and Edward Blount, London, in 1623.
Points of issue are listed only where at least two independent sources agree. Last reviewed 22 October 2026. Reviewed by Harriet Ellis; read how we check facts.
Points of issue are small, documented details, such as a misprint later corrected, a binding colour or a jacket price, …
Read the guide →7 min readTo identify a first edition, check that your copy is the first printing of the first edition. Read the copyright …
Read the guide →6 min readBook condition grading uses a six-step trade scale: Fine, Near Fine, Very Good, Good, Fair and Poor. Collectors grade the …
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