One of the greatest telltale signs of a chairs age include the markings or tags left by the manufacturer. Modern upholstered chairs may feature a tag listing both manufacturer and serial number or design name, which can be looked up on the manufacturers website or on collector websites.

How do I find out how much an antique is worth?

In addition to online services and search engines, it is possible to find out how much your antiques are worth by simply asking an antique dealer or an appraiser at an auction house, for instance, Martin says.