The image used for today's puzzle is an Evangelist portrait from the 8th-century Codex Eyckensis, the oldest book of the Gospels in Belgium. The full manuscript can be viewed here.
Very informative Wiki page for this manuscript here. Thank you to Régis Robineau for alerting me to the fact that this manuscript is now available via IIIF.
This post was inspired by Michael Appleby's IIIF-powered puzzles and uses code from Brad Manderscheid's HTML5 tutorial. All images used for these puzzles are delivered via IIIF