Hachiya Tekko +3

Coelestrox at (Ethereal Ingress #10) will upgrade your +2 armor and needs two separate trade-ins on separate days to complete the reforge process to +3. The wait time can be eliminated by paying an accompanying Escha Beads fee at each turn-in.
 * Reforged Artifact Armor +3: Hachiya Tekko +3
 * Day 1
 * Day 2