have bought the rollerball in 2000 about a year ago primarily due to its great styling. I was disappointed by the typeface, the stroke width varies greatly, what seems to be the uneven ink - a cheap recorder at my work shows that the well is better! I've tried 3 other black M63 mines in a stationery shop, all showed the same defect. Then I turned in a (handwritten) letter directly Lamy and got sent in response 2 Blue M63, but whose typeface is an even greater disaster and varies from barely visible and lubricating. Then ichs abandoned and the pin for pens (with Parker Mine) rebuilt, so at least I can use with pleasure the pen.