Just a heads-up for G1 collectors - there are now carded versions of each G1 Constructicon.
The obvious tell that they are KO's, is the missing text on the right-hand bottom corner for the 'assortment' number e.g. ASST.
I've included pics below for comparison so you can all avoid making a costly mistake -
Original G1 MOSC Scrapper
Recent KO MOSC Constructicons
1989 Chinese Reissue MOSC Scrapper (an official Hasbro release)