Prospectors

 were a limited time currency during the Wild West 2016 Event.

They were used by releasing them into the towns of the player's neighbors (Origin Friends). If the player tapped them in their own town within 4 hours of being released by neighbors, player and neighbor would have been rewarded with one type of trade currencies per prospector, otherwise only the sender will receive a reward.

Possible rewards
Tapping on Bandits had a chance to reward the Player with a, shown in the following chart.

Trivia

 * Occasionally they would disappear into a building or decoration.

Gallery
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