A hidden self-portrait by Vincent van Gogh has been discovered behind one of his paintings, covered by layers of glue and cardboard for more than a century.
원문출처 : https://www.cnn.com/style/article/hidden-vincent-van-gogh-self-portrait-intl-scli/index.html
원문출처 : https://www.cnn.com/style/article/hidden-vincent-van-gogh-self-portrait-intl-scli/index.html