Sindy is a British fashion doll created by Pedigree Dolls & Toys in 1963. A rival to Barbie, Sindy’s wholesome look and range of fashions and accessories made it the best selling toy in the United Kingdom in 1968 and 1970. After Marx Toys’ unsuccessful attempt to introduce Sindy in the United States in the late 1970s, Hasbro bought the rights to Sindy and remodelled the doll to look more American. As a result, the doll’s popularity declined and Barbie manufacturer Mattel filed a lawsuit for copyright infringement, which was settled when Hasbro agreed to remodel Sindy’s face. During the 1990s, Barbie’s share of the doll market continued to grow while Sindy’s diminished, which led to Sindy being delisted from major retailers in 1997. Hasbro returned the doll’s licence to Pedigree, and the doll was relaunched in 1999, manufactured by Vivid Imaginations. Sindy’s 40th anniversary in 2003 saw a new manufacturer, New Moons, and another relaunch and redesign. Barbie and Moxie Girlz dolls now dominate Sindy’s original target audience of pre-adolescents, so Sindy is aimed at preschool-aged girls.
Info gleaned from Wikipedia