Follow the link below, Horsman still makes dolls, with the ser# on the back shouldn't be hard to it your doll, the link has a history of various dolls made by Horsman
..good luk
In 1986 the Horsman name was sold to an Asian company; Gata - Gatabox, LTD of Hong Kong, who produced dolls under theHorsman LTD. name.
https://dollreference.com/horsman_dolls1960-1970s.html