Current knowledge
Photo © RMN-Grand Palais (musée du Louvre) 535
Guido Reni
Hercules Killing the Hydra
Current measurements:
260cm x 195cm
Van der Doort 1639
Guido [Reni] of Bologna
Hercules killing Hydra
Sale Inventory c.1649-51
Walpole Society reference (1972):