Who knew Gross collected stamps?
The
Pimco chief investment officer and co-founder owns the most valuable collection of U.S. stamps belonging to a private individual, according to
InvestmentWeek, and he's selling it for charity.
The financial pub says all proceeds will be donated to
Doctors Without Borders/Medecins Sans Frontieres (MSF) and the
Millennium Villages Project at
Columbia University's Earth Institute.
Learn more about some of the stamps in his collection and how much charity money he hopes to generate with the sale in
InvestmentWeek. 
Edited by:
Tommy Fernandez
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