It has a dark swirl going down one side. You will see all the signs expected with a hand blown shade with air bubbles, one little gob inside the top and the color swirl going down the side. It has a Nu Type Model B burner that is in good working condition just needs a wick and some oil. The lamp operates on kerosene and was manufactured in 1935, making it a vintage collectible. This original piece is made from glass and is sure to add a touch of charm to any room.