This National Cash Register belonged to my brother in law and I am attaching the paperwork that was inside the drawer. It is in perfect working order. It is a reproduction. The model 313 Special Edition was produced in 1984-1985 to commorate National Cash Registers 100th Anniversary. Approximately 10,000 units were produced and only offered to employees, retired employees, and stock holders. It's a "comemorative editioni" built in 1984.