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The value of Alex Katz’s Blue Hat, a signed Etching from 2004, is estimated to be worth between £17,000 and £26,000. There have been two sales at auction since its entry to the market in January 2023. Over the past five years, the hammer price has ranged from £19,000 in January 2023 to £25,766 in April 2023. The average annual growth rate of this artwork is 2%. The edition size of this artwork is limited to 75.