From James Norbury's "Odhams Encyclopaedia of Knitting", page 235.
There are some mistakes in the written pattern in the book, but the chart seems ok. I am puzzled as to why the pattern has rows 13 to 24. I've excluded them here, as they seem to me to be identical to rows 1 to 12.
The picture in the book (see swatch photos) doesn't represent the pattern very well. Most of the other illustrations are better than this.
This is similar to a Dorothy Reade pattern, B-8.
Shown with a cast-on count of 48 stitches.