Esterbrook Estie Button Piston Fountain Pen Tortoise Gold TrimModern Flourishes from an Old Brand If you love bottled ink, you'll love the experience of filling your Estie with a button fill system. With our illustration shown below and a tiny bit of practice, you'll be filling your pen in no time! Since 1858, the Esterbrook brand has featured fountain pens. Youd think after 160 years theyd produce a pretty fine pen! They do. The Tortoise Estie features a flexible steel nib which impresses whether extra fine,