The Patene de Serpentine has long been a part of the medieval collection of the museum and does date to the time of Christ. Oxbrow began his research on the dish after his accidental discovery of it in the museum. He says, "It's impossible to prove 100 percent that the Patene de Serpentine is the real Holy Grail. But the Patene is a sacred medieval treasure that perfectly matches every detail of the earliest descriptions of the Grail. It was in the right place at the right time. There is certainly a lot of interest in the theory."