As ATDrake says, it must be a TOPAZ ebook. These all include an embedded font, often generated from scans of the printed version of the same book. In rare cases the fonts are an improvement over the default fonts you always get with an AZW ebook, but usually they are terrible.
A TOPAZ ebook may have the filename extension .tpz or .azw1. Also, the Kindle Store web page for the ebook will not list a filesize in Product Details:
Quote:
Product Details
* Format: Kindle Edition
* Print Length: 560 pages
|