On May 3, 2012, Swirsky sold the ball through Heritage Auctions for $418,250.

The first major auction by Heritage Auctions was scheduled to be held in conjunction with the convention.

Examples from this initial print run have become quite valuable, selling for as much as US$33,460 in a 2007 Heritage Auction.

Heritage Auctions declined to disclose which museum picked up the pair, though the organisation did say the museum was outside the United States.

Cage, an avid comic book fan, auctioned a collection of 400 vintage comics through Heritage Auctions for over $1.6 million in 2002.

It is now being sold by Heritage Auctions of Dallas, Texas, and is set to fetch around $11,000 (£,7000).

Heritage Auctions was reported to suggest it had proof of the dinosaur's legal importation.

Swirsky sold his 250 piece, historic collection on May 3, 2012 through Heritage Auctions for close to $1.5 million.

This watch was sold for $23,000 at a Heritage Auction in 2009.

In October 2005, Heritage Auctions auctioned off a lot containing approximately 70,000 copies of the issue.