This is a FAKIE version of a mold originally used on a pony for the Barriguitas doll line by Famosa (Spanish market). Here are pictures of some original Famosa models: blue hair and pink hair. See also My Little Pony Fakie Pinterest board.
The following pictures are NOT Famosa models but are based on the mold. They may have the 3-bowtie symbol common on Remco fakies and Mei Ah unipegs.
This one is better quality than fakies of this pose usually are; the eyes are actually quite well detailed:
