 <translate> The important part for answering this question is: In Europe, the concept of banknotes was first introduced during the 13th century by travelers such as Marco Polo, with European banknotes appearing in 1661 in Sweden.
So, the answer is 1661. <yor> Apá pàtàkì tó yẹ ká fi dáhùn ìbéèrè yìí ni pé: Nílẹ̀ Yúróòpù, àwọn arìnrìn-àjò bíi Marco Polo ló kọ́kọ́ mú èrò nípa owó ẹyọ wá ní ọ̀rúndún kẹtàlá, àwọn owó ẹyọ ilẹ̀ Yúróòpù sì bẹ̀rẹ̀ sí í fara hàn lọ́dún 1661 ní Sweden. Nítorí náà, ìdáhùn náà ni 1661. 