The group, which will be offered on July 27, comprises 50 works split into 43 lots, and is being sold by Platt’s widow, Diane Ibbotson.
Pictured above is The Pillow Fight, a 22 x 15in (56 x 38cm) three-colour lithograph produced by Platt in c.1952. It has hopes of £100-150.
“Richard Platt was a young painter and lithographer in the mid 1950s when British art trod at the edges of abstraction and when barriers between high and low culture were being broken,” Ibbotson recalls in the biography she wrote for the collection.
“His adept and direct pen and ink drawings of situations and people at work or leisure were transposed into exceptional three-colour lithographs and paintings.”
His father, JG Platt, had been at the Royal College of Art in 1920 with the likes of Henry Moore and Barbara Hepworth. Platt followed in his footsteps, attending the college from 1950-53.
From the late 1940s through to the early ’60s, Platt’s work developed from social realism towards abstraction.
In 1962, the artist left London for Cornwall, which would become his home for the remainder of his life.