A Banksy painting honouring Britain’s health workers during the pandemic has sold for a record $29M Canadian.

The artwork Game Changer by the mystery street artist first appeared on a wall at a hospital in southern England in May. The black-and-white picture depicts a young boy sitting on the floor playing with a nurse superhero toy.

At the time, the hospital said Banksy left a note for workers there saying: “Thanks for all you’re doing. I hope this brightens the place up a bit, even if it’s only black and white.”

A reproduction of the picture will stay at the hospital for patients, visitors and staff.

Auction house Christie’s says that proceeds from the sale will be used to fund health organizations and charities across the U-K. Officials said the sale price was a world auction record for Banksy.