When buying spellbooks/Sourcebooks all have the same rotating image "preview." 
This is fine, and I fully understood why this has been done and quite like the 
idea.

The only problem is that this "rotating image" (/graphics/items/spellbook/
portrait_xxxx.jpg) is transparent on the back (which I assume shouldn't be the 
case).

The affected images are /graphics/items/spellbook/portrait_0022.jpg all the way 
through portrait_0026.jpg -- portrait_0021 and portrait_0027 are both good. IT 
is only the ones between the two. It seems like the pyramid-like insignia as 
well as the "pages" on the side are blending through.