Yes, the coins work extremely well. start off with ordering two boxes of each president, then buy as many native americans as you would like. This is especially good if you got the targeted bonus offer with the Hilton Amex. Up to 15,000 bonus points max per month. I get 6 points per dollar over $2200 spend per month. So I'll spend 73,200 Hilton points for $ 14,400 spend over October and November.

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