8) Bidders have several options for bidding method: Bids prior to the auction may be submitted by mail, fax, email, or in person, or by bidding online directly on iCollector or via SixBid or NumisBids. During the live auction, bids may be executed only in person or by phone, by prior appointment. Phone bidding is offered only as a courtesy and we do not guarantee any line condition or accessibility during or before the auction. You must remain available to receive our call when the lots you wish to bid on come up.