Having an auction house comming to look at all the items we have furnature, jewelry,gold cuff link, tie pins with stones silver , dishes, pictures, prints, and etc. the auction house puts out their oun catalog, also the day of the sale they are with clients on the phone and also e-bay while at their auction house. what questions should I ask, such as item receipt on each item,will it be only my auction, do they polish the sterling silver. They do all the handling, they take 17.5% of items sold which I think is reasonable. What other questions should I be asking? All answers will be greatly appreciated. Thanks in advance.