Antica was the first world created. Before Nova came, Antica was called Tibia. Antica is a latin word that means old. Antica was also very famous for having Bubble, who was first player to get level 100, and who was the first player to get to level 200 in Tibia.
You can find a lot rares (the oldest items) on Antica for example:
Green Tomes , Blue Tomes , and Grey Tomes
Shields of Honour