inscribed in charcoal l.r.: LHessing 60 inscribed on backing board in black fibre-tipped pen u.c.: L HESSING / Middle Cove inscribed on backing board in charcoal u.l.: "MIDDLE COVE" / CHARCOAL (...illeg.) inscribed (vertically) on backing board in black ballpoint pen u.l.: Middle Cove Charcoal NR 1 1 printed on mount in ink l.r.: 76
