Syndi, your lamp is definitely authentic, to my eye.Several style of the trefoils bases and candle holders were made, as well as the different shades. The cord will look to be excellent quality, the weight heavy, and the brass quite smooth. Of course you can take a magnet along when looking for solid brass lamps. This would be a lamp from the 60-about 80's or even a little later. Even the switch to turn on your lamp will often be on the chord like better lamps. I hope you got a good buy, for you have a lovely tradition Stiffel lamp.