Trolls became fads again in brief periods throughout the 1970's, 1980's, and 1990's, with as many as ten different manufacturers (such as Russ Berrie, Jakks Pacific, Applause, Hasbro, Mattel, Nyform, Trollkins and Ace Novelty) creating them.
Originally created in 1949 by Danish woodcutter Thomas Dam, the dolls became popular in several European countries during the early 1960's, shortly before they were introduced in the United States. The originals, also called Dam Dolls, were of the highest quality, featuring sheep wool hair and glass eyes. Their sudden popularity, along with an error in the copyright notice of Thomas Dam's original product, resulted in cheaper imitations and knock-offs which flooded the American & North American shelves.
These imitations, also known as Uneeda's Wishnik Trolls, Treasure Trolls, Norfins and other tradenames, commonly shared the signature tall hair and shiny navel gem. It was not until 2003 that a Congressional law allowed the Dam family of Denmark to restore their original U.S. copyright and become the only official manufacturer once again.
Many people collect trolls; the originals maintain the highest value. Some collectors have thousands of troll dolls, ranging in size from miniature gumball machine prizes and pencil toppers to dolls over one foot tall.