Glass pen, made in Italy, blue-purple color scheme

I bought it on a trip to Italy a few years ago. It is made in Italy.I wrote a test to check the thickness. It gives an impression of about 0.4mm.I think you can adjust the pen tip using a fine file and water.There is only one glass pen, no box or anything. impeccable for everyday use. supreme materials and excellent craftsmanship ensure long-lasting durability.