The Favorite Series (http://henryaltemus.com/series/series87.htm) is a nineteen book series of juvenile fiction that was published between 1900 and 1910 in two different formats. Today I am adding a variant (color) cover picture to the database for a Format 1 book. This book is Water Babies by Charles Kingsley. At first glance the newly added red book looks the same (except for the color) as the beige book. The interiors of the books are identical.
But if you look closely the appliques are not quite the same. The paste-ons have been cut out such that the borders of the pictures are slightly different. I had always thought that these pictures were machine cut and therefore should be identical. This does not appear to be the case.