How to identify a first printing
- First printing is identified by a complete descending number line on the copyright page ending in 1; the lowest number present indicates the printing
- As a Penguin Publishing Group imprint, do not rely on a printed "First edition" statement — use the number line
Notable points & cautions
- Conservative nonfiction imprint within Penguin Publishing Group, part of Penguin Random House
- Founded by Adrian Zackheim in April 2003 as a sister imprint to Portfolio
Imprints
First editions also appear under: Sentinel. Each generally follows the house convention above.
Frequently asked questions
How do I know if my Sentinel book is a first edition?
Check the copyright page. First printing is identified by a complete descending number line on the copyright page ending in 1; the lowest number present indicates the printing As a Penguin Publishing Group imprint, do not rely on a printed "First edition" statement — use the number line
Does Sentinel use a number line?
As a Penguin Publishing Group imprint, do not rely on a printed "First edition" statement — use the number line
Is a book-club edition a Sentinel first edition?
No. Book-club editions reprint the text but are not the true first edition. Conservative nonfiction imprint within Penguin Publishing Group, part of Penguin Random House
What era does this cover?
This covers Sentinel (2003–present). Conventions changed over time, so confirm the era of your copy.