Then and Now – Dictionary of Marks, September 1974
Dictionary of Marks, September 1974 England has had a system of design registration since 1842. From 1842 until 1883, a diamond-shaped mark with the letters “Rd.” (for “Registered”) in the center was used. Each of the corners has a letter or number. If the top corner has a letter, the design was registered between 1842 […]