This small 5 x 4½in (13 x 11½in) 1920s gouache titled 'Woman wearing a green cloche' has an asking price of £12,000 at Browse & Darby.

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Now a long-overdue reappraisal of John’s work is under way with some experts acknowledging she was a better painter than her brother. Her paintings, many of female sitters and quiet domestic interiors, are notable for being subtly rendered in a close range of tones.

A works on paper exhibition at London dealer Browse & Darby in Cork Street examines her watercolours, gouaches and pencil drawings from the early 20th century. Gwen John, until July 16, includes still-lifes, informal portraits and studies of cats with prices from £6000-12,000.