Here is Nfu Oh 51 (or you may see it referred to as VS-51, for Victorian Series):
Nfu Oh is a Korean brand, and there's always (for some years, anyway) just been one US distributor, FabulouStreet, and it does look like they still carry it. This was one of the first flakies to be widely available, as I understand it, so this is sort of a legendary polish. It's worth getting your hands on if you like this kind of thing like I do.
I showed this yesterday as a top-coat - here. Here's an older mani as well.
More links: Scrangie, Swatch & Learn