The auction house says it didn't know anything about it. The artist famously doesn't like to show his face. The buyer is a mystery. So, for that matter, is the seller.
원문출처 : https://www.cnn.com/style/article/banksy-painting-questions-intl/index.html
원문출처 : https://www.cnn.com/style/article/banksy-painting-questions-intl/index.html