Dartagnan Sbiancata Ash Counter Stool by Haymann Editions Dimensions: D 53.5 x W 50.5 x H 80.5 cm. Materials: Rosso Bulgaro leather, Sbiancata ash. with its commitment to get to the point, Toni Grilo books Dartagnan chair. Its apparent simplicity hides a perfect mastery of curves and proportions. Its swing-shaped seat surprises.