US jeans giant Levi Strauss & Co on Wednesday unveiled its first new brand for six years - a new discount clothing line that will be sold through value-priced stores including retail giant Wal-Mart. The Signature brand, which will hit Wal Mart stores next July, does not boast the distinctive back pocket stitching or red tab of Levi's other brands. The jeans are expected to sell for between $23 and $26 a pair.