Night & Day has two continues apertures, giving the pen an exaggeratedly sliced look, the entire mechanism virtually coming into contact with the writer's hand in what I would call a very "Arman" concept of a pen.
Trilogy encapsulates the concept of slices and multiples by repeating the slicing motif every 120 degrees and thus generating a multiple, symbolising accumulation and repetition.
14KT QUILL NIB (SEMIFLEX nib)