It's a screen printed piece from 1974 called China Sea.
From the small amount of research I've done on the company, they were producing fabrics from 1933 into the late 1970s and possibly later.
The China Sea print is in a deep indigo blue & muted orange colours screen printed onto a heavy weight cotton canvas. I'm thinking about using it to upholster a kneel chair I have, should be just enough fabric me thinks.
|"China Sea" screen print by S M Hexter 1974|
|detail of "China Sea" fabric|
|A Batik inspired print from S M Hexter 1977|
|Cute forest print from S M Hexter|