U+1015A "𐅚" Greek Acrophonic Hermionian One Unicode Character

U+1015A "𐅚" Greek Acrophonic Hermionian One is a numeral sign from the ancient Greek acrophonic numeral system, specifically used in the city of Hermione, where it represents the number one. This character is part of the Ancient Greek Numbers block and derives its form from the initial letter of the Greek word for one, or from a local symbol, reflecting the acrophonic principle where the first letter of a number's name stands for that value. It appears in inscriptions and documents from the archaic and classical periods, serving as a distinctive local variant among many Greek city states that had their own numeral systems.