Looking for a Ball Pen lost at Stanford on Dec 1

Dear readers,

I am looking for a ball pen that I lost today (Dec 1). The pen is engraved with my name (Alex Wong) and is held in a black leather case. I probably lost it between 9:15am and 1pm on campus. Potential locations include El Camino Real (near Galvez Road), Galvez Road, Serra Mall, Main Quad, Econ building and Tressider Union. It is an important pen to me so if anyone by chance have picked it up today, I would REALLY appreciate if you can get it back to me. I will provide a small monetary reward by courtesy.

Thank you very much.

Best,
Alex