Mikasa began in the 1930s as an international trading company in Secaucus, New Jersey. In 1948, the company added ceramic dinnerware to its product line. Mikasa never manufactured its dishes, instead contracting with many production companies to manufacture the Mikasa lines. In 2001, Mikasa merged with J.G. Durand and continues to sell its china, household accessories and crystal under the Mikasa name. The value of Mikasa china depends on the age, rarity and condition of the pieces.
Determine the pattern name for your Mikasa china. Mikasa china is marked with the Mikasa name and either a pattern name or pattern identification number. "Dinnerware of the 20th Century: The Top 500 Patterns" and similar books will help you find the name of your china pattern.
Look through books and websites to find the particular Mikasa pattern you have. You should be able to find a description of the pattern's history. Although Mikasa is an American company, the patterns look to Japan for inspiration. If your pattern is a current one, you will be able to find it on the Mikasa website at http://www.mikasa.com. For older patterns, check antique and collectibles books, especially those dedicated to china, pottery and porcelain.
Compare your Mikasa china with identical or similar pieces to determine the value of your china items. Books such as "Collector's Encyclopedia of American Dinnerware: Identification and Values" or antique and collectible websites such as http://www.goantiques.com or http://www.rubylane.com will give prices.
Calculate the final value of your Mikasa china by considering the condition of your pieces. If it is scratched or cracked, the value will be much less than a piece that is in pristine condition. For example, at http://www.tias.com, an antiques website, two Mikasa plates decorated with art by the artist Erte are listed for sale. One in mint condition, with the original box, is priced at $195. The same plate, not in mint condition, without the original box, is $98.