This is a pre-owned Aurora 88 Minerali Amethyst Fountain Pen that comes to the shop from a private collection without box/papers.  It's got an 18k fine nib, and is #98/388.

Building on Aurora’s flagship 88 design, the new Aurora 88 Minerali fountain pen collection was inspired by some of the most beautiful minerals found on earth. The Aurora 88 Minerali Amethyst is the fifth in this limited edition numbered collection of demonstrators and features brilliant purple accents. This fountain pen comes with a rhodium-plated 18k gold nib and Aurora’s exclusive Hidden Reservoir filling system.

Aurora made just 388 Minerali Amethyst fountain pens and each is individually numbered.