Sundarbans Size: 94.5 cm x 27.5cm , actual area ; two sheets pasted together. Border lines shown only on the north and east; on the eastern border 22 N and 23 N latitudes numbered; on the north, graduated border but only 1 E longitude numbered. Calcutta taken as Prime Meridian hand-drawn in black ink; map 5 not coloured but map 5A coloured. No watermark on map 5but the watermark on map 5A partly visible and reads….1815.