This is a Beswick Swish Tail horse in grey gloss ,model nos 1182.Available between 1961-1982 this has a bluey sheen,expressive eyes and a blue grey nose...all desirable attributes in Beswick World.
Designed by Arthur Gredington he stands 8.75 inches (22.2cm) tall and    has the round Beswick Backstamp on his tummy and the letter H on one hoof....the H is probably the paintresses mark.
He's a 1st version with tail attached to the quarters almost parallel to the ground.
In excellent vintage condition.