TWSBI Diamond 580ALR Purple, via JetPens
If there is one thing that TWSBI does well it is release limited edition colors for most of their popular models. The TWSBI Diamond 580ALR in Purple is another great design, with a unique finish not only on the outside of the pen, but on the interior with the piston mechanism. I have one of these pens to give away with a Fine nib, so read the rules below and enter away!
