There are 💴 U+01F4B4 Banknote With Yen Sign 💵 U+01F4B5 Banknote With Dollar Sign 💶 U+01F4B6 Banknote With Euro Sign 💷 U+01F4B7 Banknote With Pound Sign
This is clearly an incomplete set. It makes sense to have a generic "enclosing banknote" emoji character which, when combined with a currency sign, would produce the corresponding banknote, to forestall requests for individual emoji for banknotes with remaining currency signs. Leo
