This highly sought after and rare latch is from the Eastlake era, 1870 to 1890s. The highly decorated cast iron body of the latch measures 2 1/2 inches vertically and 1 5/8 inches horizontally. The keeper is a matching piece. It is 5/8 inch wide. The overall width of the latch is 2 1/4 inches.
The 1 1/8 inches turn knob appears to be brass, but is could be cast bronze which was a popular treatment in the late 19th Century. The latch has a spring mechanism plunger (operated by the knob) which fastens into the keeper.
The latch is in good working order. Screws will be included.