Well this was a new one for me. A puzzle trade card with hidden pictures, but it was the product that made me laugh. You can send away for a book on THE SEXUAL SYSTEM AND ITS DERANGEMENTS.  Read the description on the back.  Now I want to see that book!.  Condition is fair.  The text is readable and copyright 1884.  This one you don't want to miss

small and light enough to fit in a regular envelope, so shipping is only $1