This appears to be an acoustic guitar made by an individual luthier, inspired by Martin's OOO-28. The detailed specifications, precision, and sound quality are all high-quality. Looking inside the soundhole, you can see what appears to be the brand name and the names of those involved in the construction. [Condition] ・Sound check confirmed ・New strings (D'Addario 10-50) ・Fingerboard treated with orange oil ・Body wiped down [Accessories] Soft case