Marlen - Fountain pen

Pair of fountain pen and rollerball pens purchased from Treccani a few years ago. In excellent condition and perfectly functioning. Both the cap and the body have three small gold rings, like the wavy clip; the one for the fountain pen differs in the final part of the clip, with a red mother-of-pearl square set into it. I mentioned Marlen since I know Treccani usually uses this supplier.