JimInOz
··Melbourne AustraliaThis clue was:
tour billion (1000x1000x1000) minus i
3 gold bridges
Tourbillon with 3 gold bridges - a famous watch by Girard-Perregaux
which was supposed to lead you to Perregaux.
I had the first one all sorted and decided to play around, and then your second clue had me scratching my head, but it makes sense now.