Johannes Vermeer (imagined)The Sleeping Geographer, c. 1670. Oil on canvas, 48 × 42 cm. Private collection.

Created with AI, after Johannes Vermeer, public domain.

Known only from a single line in the inventory of Vermeer's widow ("a woman sleeping on a map"), the canvas was thought lost in the Amsterdam fire of 1701. In 2024 a Leiden conservator found it beneath a mediocre 19th-century landscape bought for 40 guilders at an estate sale. Analysis of the ultramarine and a canvas weave identical to The Astronomer settled the attribution. Sold in 2025 to an anonymous buyer.

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Caravaggio (imagined)The Betrayed Dice Player, c. 1597. Oil on canvas, 112 × 146 cm. Private collection.

Created with AI, after Caravaggio, public domain.

Cardinal Del Monte is said to have commissioned a companion piece to The Cardsharps. Mentioned by a single biographer, it vanished when a Roman villa was looted in 1798. It resurfaced in 2023 in the sacristy of a Maltese church, under a blackened varnish that made it pass for a copy. Cleaning revealed the painter's signature incised outlines, scratched with the butt of the brush.

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Leonardo da Vinci (imagined)Lady with a Falcon, c. 1491. Oil on walnut panel, 54 × 40 cm. Private collection.

Created with AI, after Leonardo da Vinci, public domain.

Mentioned in a letter by Ludovico Sforza, the Lady with a Falcon was meant as a pair to the Lady with an Ermine. It was believed unfinished or never begun. In 2024 infrared reflectography of an anonymous panel in a Swiss collection revealed a left-handed underdrawing and a fingerprint in the paint layer. It became the second most expensive painting ever sold.

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Claude Monet (imagined)Water Lilies, Night Effect, 1917. Oil on canvas, 100 × 200 cm. Private collection.

Created with AI, after Claude Monet, public domain.

Monet always claimed he never painted at night. Yet a letter to Clemenceau mentions "a folly made by lantern light". Given to a Giverny neighbour, the canvas spent a century rolled up behind tools in a barn. Found during a probate sale in 2023, it is the painter's only known nocturne.

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Rembrandt (imagined)Self-Portrait, Laughing Out Loud, 1669. Oil on canvas, 74 × 60 cm. Private collection.

Created with AI, after Rembrandt, public domain.

Painted months before his death, bankrupt, Rembrandt shows himself roaring with laughter. His pupil Aert de Gelder called it "a mocking testament". Deemed indecent, the canvas was cut in two in the 18th century. The halves, one in Vienna, the other in a Maine attic, were reunited in 2024 thanks to matching canvas threads.

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Gustav Klimt (imagined)The Refused Kiss, 1909. Oil and gold leaf on canvas, 150 × 150 cm. Private collection.

Created with AI, after Gustav Klimt, public domain.

Sketched the same year as The Kiss, this painting shows the woman turning her face away. Klimt reportedly found it too cruel and gave it to Emilie Flöge. Seized in 1938, it reappeared in 2024 at a Buenos Aires dealer's, was restituted to the heirs, who put it up for sale.

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Vincent van Gogh (imagined)The Old Port of Marseille, 1888. Oil on canvas, 65 × 81 cm. Private collection.

Created with AI, after Vincent van Gogh, public domain.

Van Gogh dreamed of painting Marseille, "Monticelli's city". He was believed never to have gone. A travel note found in 2023 proves a two-day escape from Arles; the painting, traded for a night at a hotel, spent the century above a bar counter in the Panier district.

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Johannes Vermeer (imagined)The Painter from Behind, Without a Model, c. 1666. Oil on canvas, 52 × 45 cm. Private collection.

Created with AI, after Johannes Vermeer, public domain.

No one knows Vermeer's face. This small canvas shows a painter from behind facing a blank canvas and, in a mirror, a blurred reflection: perhaps his only self-portrait. Discovered in 2025 behind a framed sea chart in a harbour master's office in Zeeland.

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Artemisia Gentileschi (imagined)Judith, the Morning After, c. 1625. Oil on canvas, 120 × 95 cm. Private collection.

Created with AI, after Artemisia Gentileschi, public domain.

After her Judith Slaying Holofernes, Artemisia is said to have painted the heroine the next morning, alone, washing her hands in a basin at dawn. Attributed for three centuries to "a follower of Caravaggio", it was reattributed in 2024 thanks to a signature hidden in the carpet pattern, revealed under raking light.

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Edgar Degas (imagined)The Dancer Who Leaves, 1882. Pastel and oil on canvas, 80 × 100 cm. Private collection.

Created with AI, after Edgar Degas, public domain.

Degas painted hundreds of dancers, never one leaving the Opera. This one, coat over her tutu, walks out of the stage door in the rain. Given to the dancer herself, it stayed in her family until it was found in 2024 in a house in Normandy.

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Sandro Botticelli (imagined)Venus in Winter, c. 1487. Tempera on canvas, 170 × 270 cm. Private collection.

Created with AI, after Sandro Botticelli, public domain.

A companion to The Birth of Venus, it shows the goddess in the snow, wrapped in a cloak by the Horae. It reportedly escaped Savonarola's Bonfire of the Vanities thanks to a monk who hid it in a Fiesole convent, where it was found walled up in 2024.

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Hieronymus Bosch (imagined)The Garden, the Morning After, c. 1505. Oil on oak panel, 90 × 70 cm. Private collection.

Created with AI, after Hieronymus Bosch, public domain.

The Garden of Earthly Delights shows the world's night. This panel, perhaps its reverse, shows the same garden the next morning: deserted, giant half-eaten fruit, a single creature sweeping. Separated from the triptych in the 16th century, it was found in 2024 serving as a cupboard door in a Flemish presbytery; dendrochronology dates the oak to 1498.

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J. M. W. Turner (imagined)Storm over the Château d'If, 1838. Oil on canvas, 91 × 122 cm. Private collection.

Created with AI, after J. M. W. Turner, public domain.

Turner read The Count of Monte Cristo as it came out. An 1838 sketchbook shows the Château d'If under a storm. The matching canvas, sold to a Marseille shipowner, was found in 2025 in an office at La Joliette, mistaken for an anonymous seascape.

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Georges Seurat (imagined)A Sunday Evening on La Grande Jatte, 1886. Oil on canvas, 110 × 160 cm. Private collection.

Created with AI, after Georges Seurat, public domain.

Seurat wanted to paint the same island as his famous Sunday afternoon, but at nightfall, as the strollers head home. Dead at 31, he left the canvas to his mother; it was found in 2024 rolled up in the false bottom of a travel trunk.

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Katsushika Hokusai (imagined)The Wave, the Morning After, c. 1832. Woodblock print, ink and colour on paper, 26 × 38 cm. Private collection.

Created with AI, after Katsushika Hokusai, public domain.

Scholars long suspected Hokusai had cut a sequel to his Great Wave: a letter from his publisher mentions "the sea in the morning, when it apologises". In 2024 a single impression turned up pasted to the back of a folding screen sold from a house in Nagano. Same Mount Fuji, same Prussian blue, but a glassy sea where the three boats row home with full nets. Sold for $19 million in 2025, a record for a print.

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Diego Velázquez (imagined)Las Meninas, Seen from the Mirror, c. 1657. Oil on canvas, 142 × 118 cm. Private collection.

Created with AI, after Diego Velázquez, public domain.

A 1686 inventory of the Alcazar lists "a small picture of the family, taken from the mirror", never identified. In 2023 a Seville collector had a blackened court scene from a flea market cleaned: out came Velázquez's studio seen from where the king stood, the princess from behind, the painter facing us with his brush raised. X-rays show a first version of the artist's face that he painted out himself. Sold for €132 million in 2025.

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Pieter Bruegel the Elder (imagined)The Hunters in August, 1565. Oil on oak panel, 116 × 160 cm. Private collection.

Created with AI, after Pieter Bruegel the Elder, public domain.

In 1565 Bruegel painted a series of the Months for an Antwerp merchant; five panels survive, including the famous Hunters in the Snow. The August panel, believed burnt, was identified in 2024 in a private chapel in Bohemia, under an 18th-century religious overpaint. Same hunters, same village, but at harvest time: the frozen ponds have become swimming holes. Tree-ring dating puts the oak at 1560. Sold for €96 million in 2025.

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Edvard Munch (imagined)The One Who Heard, 1895. Tempera and pastel on cardboard, 91 × 73 cm. Private collection.

Created with AI, after Edvard Munch, public domain.

In his 1895 diary Munch wrote that he wanted to paint "the one who heard the scream, across the fjord". The idea was thought to have stayed a sentence. In 2024 a rolled board was found in the attic of a guesthouse in Åsgårdstrand, where the painter spent his summers: a man on the shore, one hand over his ear, turning towards a tiny figure on a distant bridge under the same blood-red sky. Sold for $88 million in 2025.

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Henri de Toulouse-Lautrec (imagined)The Moulin Rouge at Six in the Morning, 1893. Oil on cardboard, 79 × 60 cm. Private collection.

Created with AI, after Henri de Toulouse-Lautrec, public domain.

Lautrec's friends said he often stayed at the Moulin Rouge after closing to sketch "the real dancers": the cleaning women. The picture that came of it was thought to be a legend. It resurfaced in 2023 in the storeroom of an old Toulouse cabaret, slipped behind a mirror. Chairs upturned on the tables, grey dawn light, a cleaner kicking up a cancan step with her broom. Sold for €41 million in 2025.

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Mary Cassatt (imagined)The Mother Reading the Letter, c. 1891. Oil on canvas, 81 × 65 cm. Private collection.

Created with AI, after Mary Cassatt, public domain.

In a letter to her sister Mary Cassatt describes a picture she "dares not show anyone": a mother secretly reading, while the child sleeps on her lap, a letter from a man who is not her husband. The canvas reappeared in 2024 in Philadelphia, rolled up in a Cassatt family trunk. The green garden light, the hand tight on the paper, the child who knows nothing. Sold for $34 million in 2025.

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Caspar David Friedrich (imagined)The Wanderer, Seen from the Front, c. 1818. Oil on canvas, 95 × 75 cm. Private collection.

Created with AI, after Caspar David Friedrich, public domain.

Friedrich almost always painted his figures from behind. Yet an 1818 sketchbook holds a study of a wanderer "as the mountain sees him". In 2024 a canvas rolled up in the archives of a Greifswald church finally showed that face: the same man in the green coat, on the same rock, but seen from the sea of fog, eyes closed, almost smiling. Sold for €58 million in 2025, a record for German Romanticism.

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