This is a Tall Ornate Art Nouveau Solid Brass Door Knob Backplate
This backplate has a very unique and ornate design throughout. It's in great condition with no chips or cracks. The backplate measures 15 1/5" inches tall by 3 1/4" wide. The hole at the lower half of the plate is for a deadbolt lock.
Feel free to contact us should you have any questions.