https://www.bonhams.com/auctions/25453/lot/12/?category=list&length=12&page=1
Estimates are often low.
Makes the bidder feel like he can afford it and makes the seller feel good when it sells above asking.
You're also forgetting the buyer's premium of 27.5% on the first 2500gbp of the price and 25% on the rest of it.
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