28-03-2026, 12:44 PM
(28-03-2026, 11:52 AM)Koen G wrote: You are not allowed to view links. Register or Login to view.Fabrizio, did you have any tests done on the cardboard's composition?Yes, with the microscope to analyze the fiber and it is flax with other plants and animal glue (basically from rags), but it is not possible to know its dating.