Walking Paper Doll Advertisement

Found this in a box of postcards I bought. I thought that it was a cool advertisement. I am not sure what Allen's Foot-Ease is, but it was probably earl Dr. Scholls. If you hold the paper doll at the top of her head with her foot touching the table, you can move her forward and her foot rotates making it look like she is really walking. It measures 6" from head to foot. I am surprised it lasted all these years. Not sure of the date, but it was copyright 1922. Thanks for looking !