The funny thing is according to this site http://www.actoys.net/bbs/read.php?tid-277998.html the G1 Grimlock that's been used also got the 3 dots and without the number 2, however didn't mention which variants did it use.
Edit: Thanks for the info Kup. I'm just too slow in typing. :p If anyone else got any more info I'd love to hear from you.