Cloth Seal, Cloth Worker's Personal Seal, Privy Mark, 1500~1800

Cloth Seal, Privy Marked, ON, F, Image & Found by Nigel Nicholson.
Found near Maidstone, Kent.

Circular border containing privy mark consisting of the figure 4 with cross leg extended and terminating in a vertical line and the down leg greatly extended passing through the letter O, crossed by another horizontal line with terminal vertical lines and terminating itself on the angled stroke of the letter N. A letter (J?) and I to the sides. The other side is stamped with the letter F and other faint figures are scratched below.