Global Money Week – “From Barter to Banknotes” - Monetary heyday This coin, struck under Emperor Alexius I Comnenus (AD 1081–1118), belongs to the post-reform Byzantine monetary system introduced during his reign. The aspron trachy, a distinctive concave coin, became an important denomination in Byzantine commerce and circulated widely throughout the empire. Monetary reforms such as those of Alexius I illustrate how states adapted their coinage systems in response to economic challenges, marking an important stage in the long historical development of money. Alexius I Comnenus (AD 1081-1118). Post-reform period. Philippopolis (?) mint. BI Aspron Trachy (25mm 4,18g) Obv: Christ Pantokrator seated facing on throne Rev: Alexius standing facing, holding labarum and globus cruciger. DOC 31a; SB 1936 Nice condition for this example. This lot is part of the thematic auction “From Barter to Banknotes”, organised in celebration of Global Money Week (16–22 March). Global Money Week is an international initiative coordinated by the OECD that promotes financial education and helps young people better understand money, savings, and economic systems. Through this curated selection of objects - from early trade items and proto-currencies to historic coins and modern banknotes - we explore the fascinating evolution of money and the many forms it has taken across cultures and centuries. -----