Silver Fountain Pen Allegro Black Anthracite. Only 1 left! The Allegro Sterling Silver Fountain Pen has a 925 Sterling Silver cap with pinstripe design and engraving panel. The lower part of the Allegro fountain Pen is made from methacrylate Anthracite and gives a beautiful black marbled effect. Screw cap mechanism. In Luxury presentation Box including 10 year guarantee and silver cleaning cloth. This Silver Allegro Fountain Pen fits standard ink cartridge or a Waldmann ink converter. Matching Ballpen or capless Rolerball available. See below for matching pens, refills and accessories.