American Dore [Gold-Plated] photograph Frame marked "K & O" for Kronheimer & Oldenbusch Co. New York City, New York, 1909-22. On the easel above the K & O signature is "Pat. Nov. 16 '09". The 4 1/4" X 6" Frame is completely covered in its original Dore finish, with a photo opening of approximately 3 3/8" X 5 1/4". It has an unusual feature on the back--the top two corners swivel back so you can replace the picture--see photo. You can see traces of the original dark blue/purple velvet behind the corners--see photo--the worn fabric remains on the back. The frame has a small beveled edge along the inner and outer edges, with a scroll motif in each corner. A heavy, quality frame [it weighs 9 oz. with the glass] from a well-known American company with the Dore finish in amazing condition after 100 years. Simply elegant!