Shurgrip Plate Hanger on Backing Card

Got this less than I pay for a new plate hanger. I use them to hang up my graniteware pie plates and lids.
This one seems to be from the 1950s, could be 1940s. There is another with a housewife on it happily putting her decorative plate on the wall.
I am going to leave this one on the card but if I can pick up a few more at a low low price I will use them.