First off, the book is a 60 page hardcover book, containing the story "Under the Pyramids" also titled "Imprisoned with the Pharaohs" originally published in the world famous WEIRD TALES magazine circa 1924. Ghost written by the legendary HP Lovecraft for the equally legendary Houdini!
What makes this book so special is that it comes in a custom miniature US Postal mail bag, and PADLOCKED CLOSED. (The key is on the INSIDE). So, you have to mimic Houdini, and pick the lock to get to the book. Once inside you will find a beautiful little book, sizing up at 4" x 5", containing 4 original illustrations by the weird and wonderful Nick Gucker. Each book is hand numbered and there is a RANDOM signed letterpress print in only 50 copies.
My copy has just landed at my door, and I can confirm that it is very nicely done (and the lock wasn't too hard to pick). Also happy to report that my copy (#2) contained the Nick Gucker print, which I'm sharing below.