Nehris's trades starts with Nehris in Inside Yuno (20, 18). The steps below are read from the quest's script on this server, in the order the script's quest stage moves through them.
Walkthrough
1 Talk to Nehris in Inside Yuno (20, 18)
When Room in your inventory for what you get Choose “Decorative Golden Bell” Have with you 1 × 
Golden Bell, 1 × 
Emperium, 3 × 
Gold, 20,000 zenyIt takes 1 × Golden Bell, 1 × Emperium, 3 × Gold, 20,000 zenyYou get 1 × 
Decorative Golden BellThank you for
bringing everything.
Please wait one moment.
* Clang Clang! Scrape Scrape! Jingle Jingle! *
Script:
npc/quests/newgears/2004_headgears.txt:17792 Talk to Nehris in Inside Yuno (20, 18)
When Room in your inventory for what you get Choose “Crown of Ancient Queen” Have with you 1 × 
Queen's Hair Ornament, 1 × Emperium, 3 × Gold, 20,000 zenyIt takes 1 × Queen's Hair Ornament, 1 × Emperium, 3 × Gold, 20,000 zenyYou get 1 × 
Crown of Ancient QueenThank you for
bringing everything.
Please wait one moment.
* Clang Clang! Scrape Scrape! Jingle Jingle! *
Script:
npc/quests/newgears/2004_headgears.txt:18173 Talk to Nehris in Inside Yuno (20, 18)
When Room in your inventory for what you get Choose “Crown of Mistress” then “Yes” Have with you 1 × 
Coronet, 1 × Emperium, 3 × Gold, 40,000 zenyIt takes 1 × Coronet, 1 × Emperium, 3 × Gold, 40,000 zenyYou get 1 × 
Crown of MistressAlso, please only have one Coronet in your inventory to make the Crown of Mistress. We are not responsible for any loss.
Are you sure you want to create the Crown of Mistress?
Please wait one moment.
* Clang Clang! Scrape Scrape! Jingle Jingle! *
Script:
npc/quests/newgears/2004_headgears.txt:1867
Rewards over the whole quest
1 × Decorative Golden Bell; 1 × Crown of Ancient Queen; 1 × Crown of Mistress
How this page is made: every step comes from the NPC scripts the server loads for Episode 13.2 (the file and line are under each step). "When" lists the checks the script makes before that branch runs; "Have with you" are the items it counts; experience from getexp is multiplied by the server's 50x quest rate. NPC lines are the script's own text.