This appeared in the UK's Daily Mail. It seems astonishing that something of such value could be left and forgotten, it it truly was.

"A collection of sports cards estimated to be worth more than $1million has been discovered in an abandoned warehouse in Detroit.

Millions of the Topps cards were packed away in dust-covered crates, with thousands more strewn over the floor of the derelict building.

The mint-condition collectibles, dating from the late 1980s and 90s, were discovered by a team of urban explorers whose hobby is to venture into forgotten man-made structures.

While only estimated to be individually worth between 99 cents and $5.99, the collective haul of hundreds of cases would potentially fetch millions if ever put on the market."