Two Questions...

I have two questions if someone could please answer them for me:

1.) I have 7 Kupo Nut Charms... Are these useless now? (Other than trading them in for the Stones for Darklight stuff.)

2.) What are the Allagan Gold/Silver/Bronze/Tin Pieces used for? Just to sell for gil?

Thanks in advance. :)

Allagan pieces only function as a way to give you gil without giving you gil. It's an unnecessary step (they could just reward the gil instead of the item, but, w/e). I cannot answer your first question with 100% certainty, so I won't.