24 May, 2016
2016-5-24 6:01:24 AM UTC
My Dad is a big stamp collector and he loves to collect varieties and errors in stamps, as an example the 1918 Inverted Flying Jenny is probably the most collectable error, and he does not own one.
The normal copy is worth a few cents, but the error is about $1million US.
As for books, Stu is correct they normally have no value with printing errors, you may want to look to see if you can replace the copy that you have with a fine copy without error.