Hawaiian 'kingdom' stamps to be sold

A collection of historic postage stamps issued when Hawaii was a kingdom is expected to fetch at least $2 million at auction.

Renowned stamp collector William H. Gross is offering 77 items on May 29 during the World Stamp Show at New York's Javits Center.

The collection has "some of the most iconic rarities in Hawaiian philately," said Charles Shreve, director of Robert A.Siegel Auction Galleries.