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The value of Sam Francis's Chinese Opal (signed) is estimated to be worth between £6,000 and £9,000. This lithograph print was created in 1970 and has an auction history of one sale on 19th April 2022. The average annual growth rate for this artwork is not available and the hammer price in the last five years has ranged from £1,120 in September 2016 to £1,474 in October 2017. The edition size of this artwork is limited to 15.