Delta Wē "Lucky" Dolcevita Fountain Pen-F Nib. Just like its black neighbour, except this is a "fatter" pen, and has an internal piston feed. Delta's Dolcevita collections--many, after years of expanding them--are a feast of colour for the eyes. Fortunately, their quality is also "straordinario" (for the provincial of experience, that is Italian for extraordinary). Unfortunately there is no option for XF nib, though the Delta Fine nib is far more consistent than many other design houses.