Robert Cobcroft 10 February 2014 Bike Restoration, Bianchi Bikes, Bianchi Specialissima X4 When The New Dog Digs Up The Old Dog PART 2 Robert Cobcroft 10 February 2014 Bike Restoration, Bianchi Bikes, Bianchi Specialissima X4 Restoring a Bianchi X4, removing chrome plating and metal polishing for a new triple chrome plated finish.