Switzerland, Art. Institut Orell Fussli, Zurich, Suisse, uniface proofs (2), one in brown and one in blue, portrait of Ch. Froschauer at right, both printed on large sheets of paper watermarked ‘Office Français Papiers Fiduciares’; together with modern printing essay for Union de Banques Suisse [3]. Extremely fine to almost uncirculated (£60-80)