An Italian scholar says a terracotta statuette in the collection of London’s Victoria & Albert Museum is by Leonardo da Vinci, even though the museum isn’t convinced.

According to The Art Newspaper, art history professor Francesco Caglioti of the University of Naples Federico II attributed the sculpture, known as The Virgin with the Laughing Child (ca. 1465), to the 15th-century master in an interview with an Italian newspaper. If he’s correct, it would be the only known sculpture by the Renaissance polymath in existence.