Anyone know what this is?

Saw this on eBay today:

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It was listed as proton pack. I’m thinking the seller was mistaken and this is some sort of GB wannabe toy but I’m curious to see if anyone knows what this really is.

I think it’s an accessory to one of the action figures from the Jim Carrey Grinch movie.

EDIT

Yep, it looks like the backpack from the Whobilation Grinch, sold in a two-pack with the Mayor.

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Alex

I knew that if anybody could pinpoint this, it would be you Alex. You are the true Toy Guru. LOL.

Thanks for the help!

HOLY CRAP, ALEX! Dude…lol

That does look pretty cool though, a steampunk proton pack.