Make sense. My anecdotal experience in third world money changing is the banks are most strict. The gray-market exchangers are a little more liberal and then

Make sense. My anecdotal experience in third world money changing is the banks are most strict. The gray-market exchangers are a little more liberal and then private to private transaction is the most liberal. Paraguayan banks straight up refuse to take certain year of $100 notes because they were burned by some forger years ago, so they just black-list entire series of notes no matter how crisp and authentic they are.