This original set was manufactured by Gilbert in 1880. Patent May 30, 1876. It is part of the H257 group. The fourfold fixed knobs have a trigger near to open the latch. The set also includes mortise and matching plates with key holes. Both plates were painted over, with a little soaking it could be removed.
The dimensions are Lock 3.125 in. H x 3.375 in. W, faceplate 5 in. H x 0.875 in. W, plate 5.125 in. H x 2 in. W, knob 1.75 in. L 2 in. diameter.
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