Sierra Auction - Arizona''s Largest Public Auction. Bid Now! Car and Truck Auctions, Heavy and Construction Equipment Auctions, Restaurant Equipment Auctions, Guns and Firearms Auctions, Estate Sale Auctions, Surplus Auctions, and more.. Auctions, auto, car, equipment, gun, firearms, Phoenix, Arizona, AZ, Vehicles, Cars, Government, Surplus, Bank, Repos, Public, Location, sierra auction, sierra, auction, sierra auctions, auctions, auction, auctioneer, auto auction, antique auction, real estate auction, farm sale, public sale, estate sale, antiques, cars, automobile, real estate, collectibles, heavy equipment, farm equipment, Arizona auction, Arizona auctioneer, AZ auction, AZ auctions, AZ auctions, Arizona auctions, antique fine art, fine art auction, live webcast auction, online auction, online live auction, online live auctions, online webcast auction, proxi bid, proxibid, proxibid auction, proxibid auctions, webcast auction, construction equipment auction, farm equipment auction, online real estate auction, real estate auction, vehicle auction, john deere equipment, heavy equipment, new john deere, new heavy equipment, lawn and garden equipment, vermeer equipment