As you browse the government auction sites above, you'll notice some link you to additional sites run by private contractors. These contractors have legitimate relationships with the government, but bidder beware: other private companies will try to make their auctions seem like government auctions as a marketing ploy. Always start with the legitimate links provided by the government itself. Good luck!
A ring can also be used to increase the price of an auction lot, in which the owner of the object being auctioned may increase competition by taking part in the bidding him or herself, but drop out of the bidding just before the final bid. In Britain and many other countries, rings and other forms of bidding on one's own object are illegal. This form of a ring was used as a central plot device in an episode of the British television series Lovejoy (series 4, episode 3), in which the price of a watercolour by the (fictional) Jessie Webb is inflated so that others by the same artist could be sold for more than their purchase price.
To finance the public debt, the U.S. Treasury sells bills, notes, bonds, Floating Rate Notes (FRNs), and Treasury Inflation-Protected Securities (TIPS) to institutional and individual investors through public auctions. Treasury auctions occur regularly and have a set schedule. There are three steps to an auction: announcement of the auction, bidding, and issuance of the purchased securities.