Instructions
Ask the seller if the lamp has a paper label. Pre-1960s Fenton items had a paper label on the item that helps identify it as a Fenton piece. If buying the lamp online, request closeup pictures of the Fenton label on the item.
Hold the lamp in your hand if possible. Fenton glass should be of moderate weight and not feel too heavy.
Look at the glass, particularly carnival glass, or lamps with iridescent colors. The colors should be somewhat muted and not too shiny.
Look at online galleries of early Fenton lamps to learn how to correctly identify the look of Fenton glass patterns. Early glass patterns included swirls, dots and bubbles.
Purchase a reference book or borrow one from the local library. Reference books will show pre-1960 Fenton glass lamps in detail and offer additional information about the items.