If any body politic or corporate or any person or persons shall make, sign, issue, or re-issue in Scotland any promissory note payable on demand to the bearer thereof for any sum of money less than the sum of five pounds, except the bank notes of such bankers as are hereby authorized to continue to issue bank notes as aforesaid, then and in either of such cases every such body politic or corporate or person or persons so making, signing, issuing, or re-issuing any such promissory note as aforesaid, except as aforesaid, shall for every such note so made, signed, issued, or re-issued forfeit the sum of twenty pounds.