Frédéric A. LAGUILLERMIE (1841–1934) – “Portrait of Willem van Heythuysen (a wealthy merchant from Haarlem).” 1896. Etching based on the painting by Frans Hals. First proof, on Japanese paper, signed in pencil. Narrow margins. 85 x 57.6 cm. Condition A (margins and reverse slightly dusty; rare traces of creases on the left and bottom margins).