Who is credited with establishing the era later referred to as the Kalachuri-Chedi era?

Q. Who is credited with establishing the era later referred to as the Kalachuri-Chedi era?
Answer: Ishwarsena
Notes: Ishwarsena, the Abhira king from Maharashtra, founded the era later called the Kalachuri-Chedi era. His coins were found in Saurashtra and Southern Rajputana, reflecting his rule's reach and impact in early Indian history.