OK, let me try to figure this out: We have here a clearly and obviously renumbered Polar Star. I can't imagine that it was seriously done to defraud anyone. (But, then, some of the messed-with orders books we've seen would fool nobody either.) Theory: A replacement award by the central bank. Comrade Bold loses his Polar Star and asks for a replacement. Rather than dig out an unnumbered specimen (or had they all come already numbered, thanks to the Friendly Northern Neighbor? I suspect so), you can just remove a number from a badge already in stock and add the number for Comrade Bold's lost badge. Bold is happy, the central bank strikes a number off the rolls as a renumbered replacement award, and confusion for collectors a few decades later is set in motion. How is that for a guess? Just my two (thousand) tugriks worth . . .