Hello, And what are the chances?

Hello, call me Paz, brazilian and arcane odyssey player, it’s my first time in a forum :slight_smile: , anyway started a new file to play a water mage, i’am playing for like 2/3 days, i just finished defeat the lord elius, and i’am going to sailor fist, i decide to make a stop at harverst just to gotta some quest, and to my surprise and get a prometheus acrimony from a silver chest, i was impressed, and just for curiosity i decide do make a account here for ask: What are the chances from getting a prometheus acrimony from a silver chest in the bronze sea? (with the lucky 3 effect because the current event, idk if the effect can increase my chances)

I believe it’s slightly higher than 1/5000