We have 3 vintage plastic shoe horns with Advertising on all of them - Hilton, Zayre and Tropicana Hotel and Casino.  They date from around the 1980's - 1990's.  Hiton is the beige with a hint of pink.  They measure about 5 5/8" - 5 7/8" in l x about 1 1/2" - 1 5/8" in w.  There is some old sticker residue on the Zayre one.  The Hilton one has a slight bit of fading.

3 Vintage Plastic Shoe Horns Advertising