Czechoslovakia is a popular term in the antique industry. This was a trademark was used in glasses, potteries, costume jewelleries like spring rings, necklaces, bracelets, and other decorative items made in Czechoslovakia. This mark was first used in 1918, when Czechoslovakia was formed. The mark on the article or glasses may be acid etched, molded, ink stamped, metal stamped or may appear as small metal plates. Later paper stickers were also used for the mark.