It appears to be seller selected.

Notes: A number of possible notes may be displayed here. These are options selected by the seller. Please refer below for their meaning:

* Auction may/does not get automatically extended - This message indicates whether or not the 5-minute extension option is turned on. When it's turned on, the auction closing time is automatically extended for 5 extra minutes if a bid is placed within the last 5 minutes of the auction. If this is not turned on, the auction will end at the posted closing time.

* Seller can close auction early - If the seller is satisfied with the current "High Bid," and wishes to sell the item to the current "High Bidder" as soon as possible, the seller can close the auction before the posted closing time.

The second one is interesting because instead of someone closing an auction and selling out the back door, they just declare a winner and it's done.

Search for casino chip found a whole 43 auctions. It's going to need a movement to make this one work.