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Mandatory Credit: Photo by Guy Bell/Shutterstock (14956387c) A Large Elephant Bird Egg, Madagascar, Pre-17th Century, Estimate GBP 30,000 - GBP 50,000 - part of the Science Fiction and Fantasy sale - Preview of highlights of Christie's Classic Week sales including items spanning antiquity to the 21st century. The auctions running until 12 December. Highlights of Christie's Classic Week sales., King Street, London, UK - 29 Nov 2024

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One of the largest eggs ever laid

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Brain Twister #12: Factorial factory

Brain Twister #12: Factorial factory

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BrainTwister #11: Club shuffling

BrainTwister #11: Club shuffling

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BrainTwister #10: Chairs in pairs

BrainTwister #10: Chairs in pairs

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BrainTwister #9: Rectangulator

BrainTwister #9: Rectangulator

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BrainTwister #8: Two cubes

BrainTwister #8: Two cubes

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BrainTwister #7: Home primes

BrainTwister #7: Home primes

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3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #6: Factor factory

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BrainTwister #5: Diagonal lines

BrainTwister #5: Diagonal lines

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3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #4: Addition subtraction

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3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #3: Page turner

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3D illustration, brain shaped maze. Concept image of study and brain behavior.; Shutterstock ID 2177110871; purchase_order: -; job: -; client: -; other: -

BrainTwister #2: Piles of money

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