The Λ-A on the reverse is an abbreviation for Lacedaemon, and refers to Augustus' gift of Thouria to the Spartans in gratitude for their support at Actium and as punishment for the Thourians who had sided with Antony and Cleopatra. Achaea. Messenia, Thouria. Geta as Caesar AE22 Assarion Obv: Bare-headed, draped and cuirassed bust right, seen from behind. Rev: ΘOYPIATWN, Athena standing facing, head right, holding spear right and resting her left on shield; Λ-A in fields. https://www.picturesque-peloponnese.com/thouria.html Feel free to share any coins you may have from Thouria or the Peloponnesos and anything Sparta!
