Vincent van Gogh – Self-Portrait with a Straw Hat (obverse: The Potato Peeler) – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/436532
Recent studies of Van Gogh’s canvas supports, undertaken by the Thread Count Automation Project in collaboration with the Van Gogh Museum, have used thread count and weave pattern to identify canvases cut from the same bolt
Abercrombie Professor Emeritus, Rice University, Dept. of Electrical & Computer Engineering