The Belgian franc became the common currency , while Luxembourg however retained its right to print Luxembourgish notes .
The treaty stipulated the abolition of customs barriers between the two countries , a common external tariff , a common trade policy led by Belgium and a currency association .
The Belgium franc became the common currency , while Luxembourg however retained its right to print Luxembourgish notes .
The treaty stipulated the abolition of customs barriers between the two countries , a common external tariff , a common trade policy led by Belgium and a currency association .