Banque Belge Pour l’Etranger, Societe Anonyme, obverse and reverse uniface proofs for $50 = 50 Piastres, 1 July 1921, each piece printed on paper and backed on card, in PMG holders 63 and 65 EPQ, choice/gem uncirculated, very rare and beautiful (2 notes)
Pick S126p1 £1,500-£2,000