What does The Sparklematic 5200! reward?

No reward has been recorded for The Sparklematic 5200! yet.

Where does The Sparklematic 5200! start?

It was picked up in Gnomeregan.

The quest log lists it at level 30.

No. The quest exists in Classic Era as well.

World of Warcraft: Forever · quest · level 30

A level 30 quest in World of Warcraft: Forever in Gnomeregan. Recorded by 1 player running the addon.

Giver and pay show once a player with the addon opens the quest.

No reward item has been recorded for this quest. The offer window fills this in when a player with the addon opens it.

What does The Sparklematic 5200! reward?: No reward has been recorded for The Sparklematic 5200! yet.
Where does The Sparklematic 5200! start?: It was picked up in Gnomeregan.
What level is The Sparklematic 5200!?: The quest log lists it at level 30.
Is The Sparklematic 5200! new in WoW Forever?: No. The quest exists in Classic Era as well.

What sells at this level, and what to keep from these rewards, is in the level 20 to 30 gold guide.

Source: what players running the addon saw in the quest windows; the quest text itself stays in the game. Every quest seen