Probably won’t see many of these around in decent shape. This style was made with a small machined wheel that when turned, using a small screwdriver, locked the decorative cover plate onto the hinge without the use of any screws {one picture shows location} besides being more costly to produce, when it came time to remove the hinge from a door no one could figure out how to remove and almost always bent the fancy front cover plate.
Measures 5” x 7”.