I mistakenly purchased another Fat Chocobo Head, now it takes 1 slot in my inventory, cant sell it, cant discard it, cant put it in armoire because I already have one in armoire.

Date & Time: 18 October 5 pm GMT
Frequency: Everytime
World name: Tonberry
Character name: Verse Strehinest
Area and coordinates: Anywhere

Steps:
1. Buy Fat Chocobo Hat at Apkallu Falls
2. Try to discard