Esterbrook Estie Regular Ball Pen - Nouveau BlueThe Esterbrook Estie Nouveau Blue ball pen features a crackled blue resin with either gold or palladium plated trim. it was inspired by the colour pallette of art nouveau posters by Alphonse Mucha. The pen looks, to a casual glance in poor light, like a vintagey mottled dark brown colour but on closer inspection features flakes of light blue and light brown, which have a lovely pearlescent quality, seeming to blink on and off as you rotate the pen in