Which attribute generally enhances an item’s desirability at auction?

An attribute that significantly enhances an item's desirability at auction is its previous ownership by a notable figure. This historical connection can provide the item with an aura of prestige and unique value that appeals to collectors and bidders. When something has been owned by someone famous or significant, it often acquires a narrative that adds to its allure, potentially increasing its market value well beyond similar items without such provenance.

The story behind an item can also create a sense of connection or emotional value for potential buyers, which further drives competition and interest during the auction. Notable ownership is often highlighted in marketing materials for the auction, as it can attract a broader audience, including those specifically interested in memorabilia or historical artifacts.

Other factors listed, such as commonality, a lack of historical significance, or mediocre condition, generally detract from an item's desirability at auction, as they suggest the item may be less unique, less interesting, or not in optimal shape, leading to reduced interest from potential buyers.