Didn't you read the label on the back saying "Made in Nightmarch"?
Pretty sure Brom didn't see it until it was re-inscribed with: "All Hail Prince Brom Silverfire, Serpent of Luria, and King of Dwilight"
On the other hand, I agree with Indirik on this one. The Zuma haven't stated any public claim to all items of their name, other than their generic claim to all unique items in general from what I've seen.
Edit:
All true. Though, Brom definitely does know that the Zuma are seeking the items. Several people do. Brom knows because he—according to Garret (I know, right)—was offering to collect them in exchange for salvation.
I *Knew* you were lying about that. Haktoo didn't tell you a thing. Nice fabricated letter though. (Also: Salvation of Pian, and Destruction of Solaria are two different things.)
