While I've yet to track down a nice minty fresh Grimlock (might have better luck with g2 release), I noticed that the previously released G1 Grimlock KO which hadbeen labeled as Bommander (so an easy tell) is now showing up with corrected spelling on ebay listings. There may well be other less obvious tells, but just something to be aware.

I wish they would just remake it and continue the Encore line.