Coins with no access to the address. Nobody has the privatekey.

Quote from: tacotime on April 14, 2013, 12:31:47 AM
I think the likeliest scenario is that hundreds of people downloaded and ran the client then, got a bunch of blocks that were at the time useless because they were valueless, then deleted their client.
https://bitcointalk.org/index.php?topic=175996.msg1834484#msg1834484