Attributed to Pierre CONROUX (1923-2003) A gouache drawing on tracing paper of a platinum or white gold lady's wristwatch, the round case, bracelet and bezel featuring a line of calibrated diamonds alternating with small bunches of three brilliants. Circa 1950-60. Size: 25 x 16.3 cm. Annotations on the carat weights of the different types of diamonds at bottom left, stains, small fold.