1: Bond King Bill Gross is selling his stamp collection, with one expected to fetch up to $5 million.

2: The collection includes rare and valuable stamps from around the world.

3: Stamp collecting has been a passion of Gross for many years.

4: The auction is expected to draw collectors and enthusiasts from far and wide.

5: Gross's collection is considered to be one of the most impressive in the world.

6: The stamp expected to fetch $5 million is a unique and rare piece.

7: Stamp collectors are eagerly anticipating the opportunity to bid on Gross's collection.

8: The auction is sure to attract attention from the philatelic community.

9: Stay tuned for updates on the results of the auction.