A rare Tuscan marbled Costrel or flask, probably Pontorme or Pisa, circa 1600-80
Covered with an ochre and cream-coloured marbled glaze and applied with two mask loops on each side, 25.5cm high (minor rim chips)
Similar flasks and fragments are in the British Museum, published by Dora Thornton and Timothy Wilson, Italian Renaissance Ceramics (2009), vol. II, nos. 456-460. The authors note that such flasks may have been made specifically for export, probably as containers for a precious liquid (p. 681).