Ancient greeK coin, Olbia, Sarmatia. Bronze Dolphin Proto-Money, circa 550 a 350 BC., Æ 35mm, (Sear 1684)

Portugal, rare coin of 20 centavos 1922 Copper-nickel one of the rarest coins of the Portuguese Republic, World Coins Portugal KM#571. Coin of Portugal created by law 990 of 25 June 1920. Its issuance ceased under the terms of Decree-Law 9718 of 23 May 1924. It was withdrawn from circulation on 1 May 1929 (Ordinance no. 6102 of 18 April 1929). were minted on various dates between 1920 and 1922: 5,177,500 coins, with the coins dated 1922 and the smaller modules of 1921 and 1922 being the rarest coins in this series.

Monnaies grecques (Greek Coins) by G. K. Jenkins is a comprehensive reference work on ancient Greek coinage. Published in 1972 by Office du Livre as part of the L’Univers des Monnaies series, the book offers chronological, typological, and iconographic analysis of coins from archaic, classical, and Hellenistic Greece.

Jenkins, curator of Coins and Medals at the British Museum, provides detailed descriptions, historical context, and photographic documentation, making this edition essential for collectors, historians, and students of classical numismatics.

Ancient greeK  coin, Alexander I Balas, Seleucid Kingdom, AE 19mm. 152-145 BC., Orontes mint. Legend: BAΣIΛEΩΣ AΛEXANΔΡOY.