I could be wrong, and hopefully others will correct me if I am, but I'm under the impression that in order for a serial number to be a radar note it has to have the other half's order in exact reverse order of the first half. Kind of like how radio waves (radar is a word derived from the acroynm radio detection and ranging) travel in one direction, hit an object, and then retrace back to the point of origin in the exact reverse direction. The term palindrome is used to describe words or sequence of numbers that are the same forward as they backwards. Incidentally, radar (r-a-d-a-r) is a palindrome. You would need one of the 94's to be "49" for it to be radar.
Well let's see: 94844894 backwards is 49844849 = not radar 94844849 backwards is 94844849 = yes radar
Unlikely. They either need to be in Unc/AU/XF+ condition, contain an error or be very very rare. Otherwise, once they have too many folds, lose their crispness, the ink is damaged, or there are tears, stains or graffiti the value drops to face value (or less. lol, I've offered 18$ for a crappy 20$ note before. He didn't think it was funny). Holding on to a lot of low quality stars is a bad investment. Money devalues every year, so its face value today is worth more (more buying power) then it will on a far off date. For example: 500$ notes are not worth that much. Putting that 500$ into the stock market or in Bonds back in the '30s or '40s would have yielded 10s of thousands of dollars by today. While in contrast, the same 500$ note kept safe for all these years would be only worth only 500$-800$ today, gaining no or little value over face yet losing a substantial amount of its buying power. There are a few exceptions adding a premium to them, but on a whole they're a bad buy. The same goes with common low quality stars. There will never be a time when they'll be worth a premium.
Nice one Steve. Shame about the portrait ink damage and the bent corner, but still nice and crisp otherwise. I like those zeros on the ends too, always felt they make some of the prettiest radars.