Gates is the world’s richest man and Chairman of the Board of Microsoft. Buffett is an investment entrepreneur and executive and the second richest man in the world. Bill Gates’ Microsoft business card, 3.5 x 2, signed in black felt tip in the lower right corner; and Buffett’s Geico Direct business card, 3.5 x 2, signed across the front in blue ballpoint. In very fine condition. R&R COA.