白银钥匙 that grants 一个幸运护身符

A silver key guaranteed by the Event NPC
You need this item to open
the Silver Treasure Chest dropped by a Monster.

With the Lucky Charm that you can get with free coupons,
you can increase the 物品 Drop Rate and 金币 Drop Rate.

Only 1 free coupon is provided per account even if you buy multiple silver keys.
Coupon issued on: 6:00 pm, Friday, July 6, 2007
To see the coupon: Go to the 'My Coupons' menu on the official web site.