This latch is new-old-stock, but has a small chip that is not very noticeable. We know this latch has been around for several years, but we don’t know exactly when it was made. The glass knob is like the ones used on cabinets in the 1920s.
The piece has a cylinder latch with a plunger that fits into a keeper on the frame of the cabinet door. The plunger is controlled by the knob. This cylinder, that is mortised into the door, is only 1 5/8 inches long and 7/16 inch round. The glass knob with its back plate is mounted on the front of the cabinet door. The knob is 3/4-inch size. The back plate, which is secured with two screws, is 1 1/4 inches long and 5/8-inch wide.
The keeper, as shown in the photo, is 1 1/8 inches by 1/2 inch.
The latch has a chrome finish. All needed screws are included.