Just did a search of $50 banknote and picked one which seemed the right size and clearest. I wasn’t even looking at the serial number.
I'm "borrowing" it [in perpetuity, at zero % interest] for our currency-image vault, if you don't mind -- or even if you do.
First E in EE prefix indicates Series year 2004 [printed below].
Second E in EE prefix indicates the Richmond Fed printed the note.
Eight identical digits in the serial number is called a solid. Makes the note valuable to collectors.
First solid I've ever seen. All zeros is extra rare.
This one's ideal for a 3D-printing experiment, with an incremental odometer.