Painting by Leonardo da Vinci also called La Gioconda (4,4)

I believe the answer is:

mona lisa

(Other definitions for mona lisa that I've seen before include "Famous painting of enigmatic woman by daVinci" , "Da Vinci painting" , "Fertiliser from seabirds" , "Leonardo da Vinci's enigmatic portrait" , "Leonardo da Vinci's painting of enigmatic woman" .)

I've seen this clue in The Mirror.

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