An auctioneer has authority from a bidder at the auction, as well as from the seller, to bind both by a memorandum of sale as prescribed in 30-11-504.
Mont. Code Ann. § 30-11-507
Auctioneer's authority from the bidder
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.