If you're asserting that they wouldn't ask because it's something they've physically touched, I see your point

Yes (though seeing it 'in person' without touching it also counts), I thought it was obvious that's what I meant.

it's more likely they would ask questions like "what does a dollar mean" or "does someone make decisions about the money"

Exactly. Nothing a kid can just pick up and hold is going to be something they ask "is this pretend?" about, lol.