Exciting new discovery of Andrea Mantegna drawing is reported by Artslife (in Italian - English summary on ArtDaily). Mantegna is one of the greatest draughtsmen of the early renaissance, but his drawings are scarce. Ronald Lightbown's 1986 Mantegna catalogue lists just twenty, with some more added at the 1992 Mantegna exhibition at the Royal Academy/Metropolitan Museum of Art. This small double-sided sheet is related to three others that were included in the RA exhibition, probably studies for this engraving of the Entombment.
My first thought was that this is too good to be true. Not only a new Mantegna, but what a perfect Mantegna! He is celebrated for his skillful foreshortening, most famously in the Dead Christ in Milan's Brera. This sheet fits (too?) perfectly between a study of Christ alone in the British Museum, and a more developed study of the upper group in Brescia. But it does seem right. The paper and the handwriting on the inscription match the related drawings, and it has a nervous energy characteristic of Mantegna, which would be hard to replicate. It seems too good and too characteristic of Mantegna to be other than by Mantegna or by a forger.
The estimate of €140k-€220k is oddly wide and oddly low, presumably because it's subject to Italian export restrictions. I can't find the online catalogue entry on the auction site.