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St. John and Veronica dyptich (right wing)
Hans Memling (Memlinc), Netherlandish, c. 1430 – 1494
Oil on wood, 31,6 x 24,4 cm, National Gallery of Art, Washington
The gold chalice with a serpent is a symbol of redemption. It is referring to the legend of St John the Evangelist who, ordered to drink a cup of poisoned wine, made the sign of blessing, and the venom was miraculously drawn from the liquid.