Authentic Tiffany lamps from the Tiffany Studios era (1893-1932) are identified by:
* The Tiffany Studios Signature: This is the most reliable way to identify an authentic Tiffany lamp. The signature usually consists of the word "Tiffany" or "Tiffany Studios" in a distinctive, often flowing script, and is often found on the base or underside of the lamp.
* The "Favrile" Glass: Louis Comfort Tiffany developed a unique, iridescent glass he called "Favrile," known for its flowing, organic shapes and rich colors. While Favrile glass was not exclusive to Tiffany Studios, it is a key indicator of authenticity when found on a lamp.
* The Copper Foil Construction: Tiffany lamps are made using the copper foil technique, where each piece of glass is individually wrapped in copper foil before being soldered together. This construction method is characteristic of Tiffany's work.
* The "Dragonfly" Signature: While not always present, a dragonfly motif is sometimes found on the base or shade of authentic Tiffany lamps. It is a common symbol in Tiffany's art and can be a helpful clue.
Important Considerations:
* Forgeries and Reproductions: There are many forgeries and reproductions of Tiffany lamps, so it's crucial to research thoroughly before purchasing.
* Expert Authentication: For high-value lamps, consulting an expert in Tiffany lamps or antiques is recommended.
Identifying Reproductions:
* Missing Signature: Many reproductions lack the Tiffany Studios signature.
* Cheap Glass: Reproductions often use less expensive, less iridescent glass.
* Construction Quality: The copper foil construction in reproductions may be less precise.
Remember: While the features above provide a good starting point, only an expert can definitively authenticate a Tiffany lamp.