Switzerland, Two uniface proofs for ‘Art. Institut Orell Fussli, Zurich, Suisse ‘, one in brown and one in blue with portrait of Ch. Froschauer at right, both printed on large sheets of paper watermarked ‘Office Francais Papiers Fiduciares’ together with modern printing essay for Union de Banques Suisse [3]. Extremely fine to almost uncirculated (£120-140)