Year 20 of Trajan's reign in Egypt — the "L Κ" in the coin's designation marks regnal year 20 by the Egyptian calendar, running from late 116 into 117 AD. This was the final full Egyptian regnal year before Trajan's death in August 117, during his withdrawal from Mesopotamia after the Parthian campaigns overstretched Roman supply lines. The Alexandrian mint operated on a closed currency system; provincials were required to exchange Roman coinage for local issues, making these bronzes the everyday transactional currency of Egypt's vast population.
Year 20 of Trajan's reign in Egypt — the "L Κ" in the coin's designation marks regnal year 20 by the Egyptian calendar, running from late 116 into 117 AD. This was the final full Egyptian regnal year before Trajan's death in August 117, during his withdrawal from Mesopotamia after the Parthian campaigns overstretched Roman supply lines. The Alexandrian mint operated on a closed currency system; provincials were required to exchange Roman coinage for local issues, making these bronzes the everyday transactional currency of Egypt's vast population.