Look, it’s Leonardo da Vinci’s thumbprint
“The Saint John’s Bible is the first handwritten, illuminated Bible of its scale in over 500 years. The Bible gets its name from the Benedictine abbey and university which commissioned it: Saint John’s Abbey and Saint John’s University in Collegeville, Minnesota.... In 1995, Donald Jackson, Senior Scribe to Queen Elizabeth II, presented his lifelong dream to handwrite and illuminate the Bible to the abbey and university. In 1998, they commissioned Jackson to begin the project, and on Ash Wednesday in 2000, he drew the first words: ‘In the beginning’. Eleven years later (2011), Donald and his wife, Mabel, presented the final page of The Saint John’s Bible to the abbey and university.”
A Way With Words: The Power and Art of the Book at the Children’s Museum of the Arts. Take a look at a larger version of the above image here.