true on the look of the chrome.
but bumper fit is likely better on NOS since it’s never been straightened.
problem with the OP’s bumper is what proof is there that’s it’s NOS vs rechrome? Is there a sticker with part number? factory stamp?
I’m pretty sure they don’t repro 63 valiant bumpers. So it eliminates that.
it’s probably worth as much as standard rechrome plus $25-50 core. Minus some if there are any shelf and handling scratches in it.
IMHO, $250-$600 plus shipping… VERY dependent on condition.