Inscription
lower left in graphite: OKTP; lower right in graphite: [COfili] 08; in unknown hand, lower right verso in graphite: Ofili: Rincon Falls - Black Leaf OKTP
lower left in graphite: OKTP; lower right in graphite: [COfili] 08; in unknown hand, lower right verso in graphite: Ofili: Rincon Falls - Black Leaf OKTP