Floyd Mayweather uses $4,000 Gold Pen to sign Pacquiao contract

Floyd Mayweather used an 18 karat gold pen worth $4,000 to sign his contract for the big Pacquiao fight, according to TMZ

It's called the Peerless 125 (because there are only 125 in the world) by Cross ... and it's one of the most expensive writing implements in the world.

A spokesperson for Cross says he's pumped to add Floyd to the list of "noble" clients who use the company's pens ... including Oprah and President Obama, who has actually signed official docs with a Cross.
BTW -- Floyd retired the pen after he signed contract ... saying it's now "a part of history."

Source: TMZ