@Classic Hunt monsters to collect Letters or get Letter Pouches through Special Crafting and missions. Form LINEAGE II, NCSOFT, or FALLSEASON in the Letter Collector UI to claim rewards, including Doll Summoning Tickets, Talisman items, XP boosts, and more!
Full details https://na-lineage2.plaync.com/en-us/board/l2classic/view?articleId=6aa9d46f4b52050c9a28731d