Is it legal to mark notes as recommended by Wheres George for dollar notes?
Yes, it is apparently not illegal. One of our users received an email from the ECB which states that. If you choose to mark them, please only write on the white background. There is no reason to deface the notes. Moreover, some banks remove any bills with markings on them from circulation, so you may shorten the lifetime of a note significantly if you mark it. Besides, some cashiers have engaged users in debates about scribblings and occasionally even refused to accept such notes.
