Inscription
lower left below platemark in graphite: OKTP; lower right below platemark in graphite: Marioni '08; lower right verso in graphite by unknown hand: Marioni: It's Not Easy Being Green OKTP
lower left below platemark in graphite: OKTP; lower right below platemark in graphite: Marioni '08; lower right verso in graphite by unknown hand: Marioni: It's Not Easy Being Green OKTP