"Don't you have coins? Paper bills?" Fluttershy asked.

"No to the first, and there is Pre-war paper money, but we don't use it. We just use it for barter and sometimes as fuel for campfires." Mark said. "A lot of concepts you have here...kinda went up in flames when the Great War happened. It's a nuclear wasteland, remember?"

Wait.... don't the NCR have bills? And I'm pretty sure the Legion has the denarius and aureus, right?

Just came to mind.

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if i remember correctly, NCR was in the process of integrating paper bills back into use, but not many accepted that style, and the legion...
Well, not many would use the money of a fallen faction that pretty much is stomped to the ground and below.
my guess, really.

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10969480
Both are true.

Why didn't Spike get to go with the Mane 6 to meet Mark(and hear about what Mark told them)?

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Look, I know you're Spike-obsessed. But your comments are doing little to contribute to the overall story, and it irritates me to see that your only comment is "Where's Spike?" or something along that line.

It's not helpful. It's not contributing. It's very annoying.

I can't control what you do, but please tone it down.