Publishing Industry What does 10 9 8 7 6 5 4 3 2 1 mean in a book? February 6, 2026 by Myaya | Leave a Comment 10 9 8 7 6 5 4 3 2 1 in a book refers to the printer’s key, a sequence that indicates the print run of a particular book edition. The lowest number present in this sequence typically shows the print run number. What is a Printer’s Key in Books? The printer’s key is a […] Read more »