It appears to be perfect timing for trading in da Vinci, seeing that the biography by Walter Isaacson[0] is a bestseller and likely to be turned into a movie. You'd guess that market liquidity would be greatly increased by this, and liquidity (the ease with which one can find buyers and sellers -- buyers esp in this case) is likely to be a major issue in the art market. And a da Vinci might appeal to bidders who aren't normally involved in the art market.

Walter Isaacson talks about his book and the painting in question, "Salvator Mundi," "the one that's going to be going on sale," in a 50-minute interview with Charlie Rose.[1] The talk of this painting is at 31:45. That's pretty good marketing right there.

The painting itself is mesmerizing, gorgeous, awakening, tremendous.

[0] https://www.goodreads.com/book/show/34684622-leonardo-da-vin...

[1] https://charlierose.com/videos/31068 (31:45 for talk of "Salvator Mundi")