Hi, I can't figure out, no matter what I tried, what would be the correct collective name for ephemera used as means of payment. I refer mainly to old but tickets, austerity coupons/vouchers and so on. When trying to describe a lot, I can't just write "xx means of payment", can I? Because means of payment is actually singular. The best I have come up with is "paper items used as means of payment" but this feels clumsy and I am sure there's a better way to describe such lots.