In my quest to collect the G1 Dinobots I have ended up with 2 Grimlocks. To the best of my (humble) knowledge they look genuine - both have the Takara Japan copyright stuff on the inside of the robot's right leg. However one Grimy has Hasbro 1980 1984 written in the same spot on the left leg, and the other Grimy does not.
Does this mean one is a fake?
The one with writing on both legs has no rub sticker (or any stickers for that matter!). The other has a rub sticker.
Can anyone shed some light on this for me, or check their G1 Grimlock?

Cheers