Brown 1926 and 1929 give this livery under London’s Byron S.S. Co., operated by M. Embiricos.
Schneider’s Talbot-Booth-derived flag outlines the red circle in black. The book does show this edging, but Rosanoski thinks it may be a printing device rather than part of the design.
Maris A. Embiricos was established in 1928 for general tramping. Merchant Ships places him in Paris under Greece; other registers give Paris and Athens, then New York under Central American Steamship Agency. Jordan calls him Embiricos Line, which Rosanoski presumes distinct from Embiricos Lines.
Keep the explicit scope label independent; no alias or company identity is inferred.