models for specific haircuts wanted

here’s a funny old sign. it’s advertising for models. it’s not clear whether the sort of model is like the one in the picture, but let’s leave that.
what intrigued me was that they are looking for general models for specific haircuts. what’s a specific haircut ?
https://www.funkypancake.com/blog/stuff3/2006/01/DSC08355-thumb.jpg

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