The Energon Pub

Can somebody tell me what this MixMaster is please i only ask because above the windshield is what looks like a blue headlight and the one in the galleries does not.

I honestly can't tell. My usual source on variations (Fred's Complete Transformers Variants and Variations Page) is gone, so I'm relying on TFU and the Wiki. My gut feeling is it's a G1 with a blue sticker where one shouldn't be, but I can't be 100% sure. Any chance we could get some more pics, either head-on or top-down (preferably both)?

Is Hasbro stamped anywhere on it?

I have the org. G1 Mixmaster, but I don't have him with me atm. He's at my storage space. Wish I could help.

I searched for variants. None came up with a blue headlight. What do the stamps say?

That looks like a misplaced sticker. I'd assume it's the G1 version. Without seeing the thing in better images, it's hard to be certain. Looks pretty legit though.