For my birthday...

I intended to post this earlier, but I've just been swamped. This was a gift from my wife for my birthday last Saturday. It's a Libelle fountain pen. I have a Waterman that was also a gift from her that I use regularly. Occasionally I have got to work and left it behind at home or the reverse. She decided I needed the ability to leave one at home for writing. The tough decision now, is which one?