In ac4 the currency name was Real what is the name that you tink that it will be in S&B
most likey euros or franks. Maybe some regions would use Spanish currency- don't know its name.
Why euros if they are recently? And what Spain currency do you say if it is the modern is also the euro
I would think that they will use Dubloons
Piastres, Pesos, Lira, Doubloons, Tugriks, Pounds, Francs, Sterling. And so on. Or, some kind of its own, fictional monetary currency.