These cards are light play (excellent) condition based on eBay's card rating system. They are not professionally graded so please review the pictures to confirm this for yourself before purchasing.
This listing is for 12 Urza 'Tron' lands from the Chronicles set. It contains 4 of each land type.
There are 6 out of the 12 card versions. All the Mines are version 3, all power plants are either versions 2 or 4, and the Towers are versions 1,2 and 4.