From the Guitar Dater Project: http://www.guitardaterproject.org/epiphone.aspx
Guitar Info
Your guitar was made at the
Muse Plant, China
August 1922
Production Number: 1581
Muse Incorporated
Muse Incorporated has been in existence for 10 years, Headquartered in Inchon, Korea, with additional plants in Weifang, China. Muse builds guitars, basses and amplifiers.