The Proceeds of Crime Act now allows for a court to confiscate any goods that a person can not legally account for. There are many thousands of such court orders issued each year, and items that can not be returned to their legal owner are auctioned off at local auction houses all over the UK at Proceeds of Crime auctions as featured in the BBC documentary series Ill Gotten Gains. Police auctions are an established route used by regional police forces across the country to dispose of proceeds of crime, lost and found, seized, and unclaimed stolen and confiscated property.
Walrasian auction or Walrasian t√Ętonnement is an auction in which the auctioneer takes bids from both buyers and sellers in a market of multiple goods.[46] The auctioneer progressively either raises or drops the current proposed price depending on the bids of both buyers and sellers, the auction concluding when supply and demand exactly balance.[47] As a high price tends to dampen demand while a low price tends to increase demand, in theory there is a particular price somewhere in the middle where supply and demand will match.[46] 

At the close of an auction, Treasury awards all noncompetitive bids that comply with the auction rules and then accepts competitive bids in ascending order of their rate, yield, or discount margin (lowest to highest) until the quantity of awarded bids reaches the offering amount. All bidders will receive the same rate, yield, or discount margin at the highest accepted bid.
Mystery auction is a type of auction where bidders bid for boxes or envelopes containing unspecified or underspecified items, usually on the hope that the items will be humorous, interesting, or valuable.[33][34] In the early days of eBay's popularity, sellers began promoting boxes or packages of random and usually low-value items not worth selling by themselves.[35]
The District of Columbia now auctions its surplus property online through GovDeals, a Liquidity Services, Inc. marketplace. The district awarded the contract for the management of the inventory, appraisal, sale and shipping of the city's surplus property to Liquidity Services Inc. LSI conducts auctions of city assets such as vehicles, police automobile accessories, computer equipment, radios and other communications equipment, office furniture and other supplies through its online marketplace. The auctions are expected to improve data tracking and financial oversight of the city's surplus asset disposition activities.
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