This is a stained oak and gilt gesso painted picture frame that was made in 1930's based on the nail and wide staple construction on the back. The frame would have a current value of $50 to $60 retail. As a framed mirror, $90 to $120.
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You are right about the staples, I mistook one of the sideways nails for a staple now that I have gone back and reviewed the pictures. The frame can then date to circa 1900, but the value would still be the $50 to $60 retail value.