To register for a Past Auction Sale, you must know the “Sold Price." However, most members do not pay for a subscription to get such historical information; there should be a checkbox option “Paywall Sale Data.” If checked, the amount is not required to register the sale, and another member can go back in and edit that information later.
Sometimes, the same coin is sold through various auctions with various auction houses. There should be an option to add another Auction that is labeled “Previous Auctions.”
Each Auction should also have a “Comment Section" to note any particular information that pertains to such item.
