According to my information, there were no seconds of limited editions as such. What was done, however, with LE weights not quite coming up to standard, but still nice weights (borderline cases only), were modifications - so they would not have to be destroyed, but could be sold in the factory shop.
Such modifications could be facetting (possibly for less experienced workers to practice): tootingpf's Iguana would certainly be an extreme example - if compared to the original, limited edition weight (attached).
Another method would be partial sandblasting - and this seems to be the case with Cris' Dragonfly: if you look closely, some zig-zag surface structure has been added to the lower part of the dome.
I guess this is a compromise between not wasting nice (though not perfect) paperweights and not inflating the edition size of limited weights: different people will have different opinions on how different the modified weights had to be, in order not to get confused with the limited edition weight, I suppose.