Silent auction is a variant of the English auction in which bids are written on a sheet of paper. At the predetermined end of the auction, the highest listed bidder wins the item.[43] This auction is often used in charity events, with many items auctioned simultaneously and "closed" at a common finish time.[43][44] The auction is "silent" in that there is no auctioneer selling individual items,[43] the bidders writing their bids on a bidding sheet often left on a table near the item.[45] At charity auctions, bid sheets usually have a fixed starting amount, predetermined bid increments, and a "guaranteed bid" amount which works the same as a "buy now" amount. Other variations of this type of auction may include sealed bids.[43] The highest bidder pays the price he or she submitted.[43]

A primary dealer is a firm that buys government securities directly from a government, with the intention of reselling them to others, thus acting as a market maker of government securities. The government may regulate the behavior and number of its primary dealers and impose conditions of entry. Some governments sell their securities only to primary dealers; some sell them to others as well. Governments that use primary dealers include Belgium, Brazil,[1] Canada, China, France, Hong Kong, India, Italy, Japan, Singapore, Spain, the United Kingdom, and the United States.

This site advertises auctions of seized Real Property for sale throughout the United States and Puerto Rico and includes single and multi-family residences; commercial and residential land; commercial buildings and warehouses; and operating businesses. These properties have been seized and forfeited due to violations of federal laws enforced by the U.S. Department of the Treasury. Participating enforcement agencies include: IRS-Criminal Investigations Division, Immigration and Customs Enforcement, and the U.S. Secret Service. All proceeds from the sale of property are deposited in the U.S. Treasury Asset Forfeiture Fund. This fund helps support continued law enforcement efforts and provide restitution to crime victims.

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!
Real property - Primarily, this consists of developed land with buildings, usually acquired by the federal government for a specific purpose, such as a military base or office building. This also includes some U.S. Forest Service properties, which usually consist of administrative sites and facilities. The General Services Administration (GSA) is the federal agency responsible for selling developed surplus property.  
Property becomes tax-defaulted land if property taxes remain unpaid at 12:01 a.m. on July 1st.  Property that is tax-defaulted after five years (or three years in the case of property also subject to a nuisance abatement lien) becomes subject to the county tax collector’s power to sell that property in order to satisfy the defaulted property taxes. The county tax collector must attempt to sell the property within four years of becoming subject to sale.
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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