Fig. 1From: Dutch or Iranian? Technical study of a seventeenth-century painting on paper from Gesina Ter Bosch’s scrapbookAn Iranian Youth, c. 1650–70, from Gesina ter Borch’s family scrapbook, fol. 40r. Opaque watercolour heightened with gold and silver on paper, Rijksmuseum, dimensions of the album page 243 mm × 360 m, Amsterdam, Rijksmuseum, inv. no. BI-1887-1463-40; purchased with the support of the Vereniging RembrandtBack to article page