To obtain this map I know of two ways. The map name is the same for both. However, if you read the description it's different for each map!
You see a map. It weighs 8.30 oz. "You see a map of our world Tibia" Obtained during the Purple Tome Quest
You see a map. It weighs 8.30 oz. "The map shows the original floor plan of this mine. You recognise your position and that the shaft to the south actually would reach much further. (In the lower right corner someone scribbled a note how to use the hoist on the first mine floor.)" Obtained during the Formorgar Mines Hoist Quest