negotiable instrument instrument negotiable instrument instrument instrument instrument https://www.law.cornell.edu/ucc/3/3-104 instrument https://www.law.cornell.edu/ucc/3/3-104 instrument https://www.law.cornell.edu/ucc/3/3-104 instrument negotiable instrument a regular check and a cashier's check instrument a regular check and a cashier's check check instrument https://www.law.cornell.edu/ucc/3/3-104 check https://www.law.cornell.edu/ucc/3/3-104#Check instrument instrument instrument instrument