Instructions
Search the exterior and interior of the item for any identifying marks, such as company name, serial number or style name. The maker's marks may be located on the lining, or inside an interior pocket, so look closely. You can then search for this name on a list of vintage/antique suitcase manufacturers to see if the company is still in business. If they are, you may be able to contact the company directly for information on the specific model and its market value. One such list of companies can be found at the Arts and Crafts Home website (listed in this article's References section) under "A History of Vintage Luggage."
Check the suitcase to see if there is a luggage tag belonging to a previous owner. They may have the original receipt, or be able to help you identify where and when the suitcase was purchased.
Look for a Royal Warrant stamp or town identification stamp. For English-made leather goods, certain companies like Mappin and Webb or A. Barrett and Sons used a Royal Warrant seal to show that they had a special relationship with the crown and to reinforce the idea that they made top-quality goods. Other English luggage firms would stamp their products with a stamp that named the city where they were located. These seals should be prominently placed within the item's interior.
Hire an appraiser, or try your luck when traveling appraisers like PBS' "Antiques Roadshow" come to your city. An appraiser who specializes in luggage or leather goods will be of the most assistance, and such a person may be found through a search of business telephone directories or the Internet.