Gilt marbled fore-edge of the Catholicon. The marbling is very subtle in this view.
A verso of a leaf in the Catholicon, with more visible marbling on the fore-edge.
#ForeedgeFriday or #MarbledMonday? It's the end of our first week back in the office and we're still trying to figure out what day it is!
The mid-18th century French binding of the @illinoisrbml.bsky.social Catholicon (1469) features gilt marbled edges.