Unknown Maker String Holder - Mad Hatter #402

Next in the string holder set is #402, the Mad Hatter.  I can't say that these are attractive, but very cool in a kind of grotesque way.

I believe that these are licensed, as they all bear a © WDP, but I don't have a date on them.  I can only assume 1950s, mostly because they made a full set, and that usually only happened during or around the original release, and string holders slowly faded away after the 1950s.