What is the most prestigious auction house?

Could you elaborate on what criteria would make an auction house considered the most prestigious? Is it based on the value of items sold, the exclusivity of the clientele, the historical significance of the auctions, or a combination of these factors? Furthermore, are there any specific auction houses that have garnered a reputation for being the most prestigious in the industry, and if so, what sets them apart from the rest? Lastly, how does the reputation of an auction house impact the value and demand for the items they offer?