Now that you mention it I seem to remember discussions of high numbers before. Assigning a super value because of a number is kind of pointless. If it was 490101 would 490100 be worth a whole lot less? So you pay $10,000 to get the last Krag and a couple of years later 490102 shows up. The last ones may have been using up parts that were not quite good enough for the regular production run but good enough someone did not have the heart to throw it away.