Not sure if this is an authentic Eastlake chair or not -

Bought this at a thrift shop. As I begin to look at it I am wondering if it is an authentic Lakeside style. There is only one flaw that I can find and it is on the back side of the decorative post on the left side back. It appears to be maybe a walnut wood with the original upholstery. Can anyone tell me anything about this piece. I would love to know. Thank you.