The name "Morris" itself comes from founder Toshio Moridaira's nickname, given to him by an employee at the Gibson factory in 1964. Because Morris produced everything from affordable entry-level guitars to professional-grade instruments, serial numbers are the primary way for collectors to verify if a guitar was "Made in Japan" at the famous Nagano factory.
A six-digit number starting with "0" (e.g., 012345) is likely a 1990 or 2000 guitar. Without factory records, these can be off by ±2 years. morris guitar serial numbers