What denomination is Vanguard?

Excuse me, could you clarify something for me? I've come across the term "Vanguard" in the context of cryptocurrency and finance, but I'm a bit confused about what denomination it refers to. Is Vanguard a specific coin, token, or asset class with a set denomination, like Bitcoin or Ether? Or is it perhaps a term used to describe a certain investment strategy or fund that doesn't necessarily have a fixed denomination? Could you elaborate on what you mean by "What denomination is Vanguard?" and provide some context for me?