It's not only a radar it's also a 3 digit repeater... 644 644 6... the pattern repeats itself....
As others have mentioned condition prevails... From your description I would guess that the condition would fall between VF and EF...
With respect to value... I can't remember seeing any current issues in such a condition listed at any major auctions as of yet... doesn't mean it hasn't happened .. just haven't seen 'em... I think most people that have these kind of notes are still holding on to 'em. Imagine coming across a 1937 note that was a radar repeater!! I don't think I would care about condition I would want that note for my collection... my advice unless you need the $$ hold onto this one for awhile...