This one is probably (maybe) a British Sampson Mordan figural railway lantern mechanical pencil (markings are very weak). Made of sterling with three telescopic sections (two shown in the picture). The writing lead section is simultaneously propelled out to the working position as the telescopic sections are physically pulled away from the body of the pencil. The lamp lens is made of glass. Another example of this pencil features a hinged cap that has holes in the body to store extra lead. This piece pictured is 1 1/2 inches compressed and 4 5/8 inches extended. Circa 1890.