Mayweather Vs. Pacquiao -- $1 Million Belt Gets Private Security ... From Mexico to Vegas

TMZ Sports has learned, The MILLION DOLLAR championship belt that will be awarded to winner of Mayweather vs. Pacquiao has it's own private security detail that will escort it from Mexico to Vegas. A rep for the World Boxing Council tells us ... the belt -- which is encrusted with more than 3,000 real miniature emeralds -- be be unveiled on Monday in Mexico ... at WBC headquarters After it makes it's public debut, the belt will travel to the MGM Grand -- escorted by the President of the World Boxing Council and 2 private security guards.