Sergio Placed on 05-10-2023 After seeing a picture of Einstein using this pen (although some believe it was a Pelikan) in an old Time magazine, I decided to buy it, and I can see why Einstein would have used it. It feels fantastic. The cover material is particularly nice. What I like most about it aesthetically is that it is not straight but has a very gentle curve. Fantastic pen and highly recommended. I bought the F, and it writes fantastic.