Page Over-Runs

  "Page Over-Runs" are the extra pages left over when hand printing a book. These can be proofs to make sure the color and registration are correct on a page. They can also be that too many impressions were printed. To "print safe", more impressions are printed than needed in case there is a mistake when printing the type. 

Page Over-Runs usually appear the same as they are in the book, unless they are color proofs.