This is an example of the Optimus 210. It is basically the 200 lantern with a wooden handle in the middle. This lamp was then offered with an enamell shade with fringe and was then called the 210 or with a parchment shade and then it became the 209. First introduced around the mid 1930s the 210 disappears from the model range during the 1940s . Most likely beaded fringes were out of fashion by then.