CIV § 2362

An auctioneer, in the absence of special authorization or usage to the contrary, has authority from the seller, only as follows:

1. To sell by public auction to the highest bidder;

2. To sell for cash only, except such articles as are usually sold on credit at auction;

3. To warrant, in like manner with other agents to sell, according to Section 2323;

4. To prescribe reasonable rules and terms of sale;

5. To deliver the thing sold, upon payment of the price;

6. To collect the price; and,

7. To do whatever else is necessary, or proper and usual, in the ordinary course of business, for effecting these purposes.