Holding di Partecipazioni Industriali SpA is facing shareholder pressure to sell Rome-based fashion house Valentino but the asking price of ITL700bn-ITL800bn is too high, said a source close to the company. HDP, the Italian fashion and publishing holding company, has held talks with both textile and clothing giant Marzotto (I.GMF)and luxury-goods label Gucci Group NV (GUC) about selling Valentino, the source told Dow Jones Newswires.