| The William Mitchell Post Office nib, a durable nib that is high elastic (firm) but flexible, with longer tines than a Copperplate nib. William Mitchell nib points have a protective lacquer to prevent tarnishing. Briefly immerse the full pen point in boiling water before first use to remove. Washing your pen in lukewarm water after each use, then drying it gently with paper tissue, will maintain its optimum performance. |