A Brass Fairy

When you complete Magnus' The Genius of Giovanni quest, he hands you this one, still all about the Brass. This coincides well with Giovanni's Tinker Time quest so I'd recommend waiting until you have both on your plate before proceeding:

After you complete this quest, Magnus will give you another, called Beauty of Brass.

Quest Requirements:
Make 3 more Brass Gears
Get 1 new Opals
Make 1 new Toy Fairies

Quest Rewards:
450 XP

Castleville Legends Wiki