While searching around the Internet, I discovered a fun video with these mechanical postcards. They are listed as "erotic" because - at the time they were produced about one hundred years ago - they were considered quite racy. Now, they're just fun and different, but certainly not considered erotic in our day and time!
Click here to see this unusual antiques video, and enjoy the ladies of a much earlier time on these century-old "erotic" postcards!!
By the way, if you happen to run across any of these postcards, they are quite rare, difficult to find, and a treasure to own.