“D. K. MILLER LOCK CO PHILA. PA PATD JULY 26.70.” – No Pins. “D. K. MILLER LOCK
“D. K. MILLER LOCK CO PHILA. PA PATD JULY 26.70.” – No Pins. “D. K. MILLER LOCK CO PHILA. PA PATD JULY 26.70.” is stamped on the obverse of the body. The reverse and the left edge of the case is plain. Some locks are nickel plated.Patent # 105710. (M-440).