Vintage T-Shirt Forum & Community Authentication Appraisals

Going through a lot of shirts at the moment and pulled out a couple of C.O.F ones.
One has a license date print on it but this one doesn’t.
Any thoughts as I can find similar but not with the same back print?

I'm answering my own enquiry here but looking at this shirt up against the officially licensed one I have, the print and registration looks blurry / off which points to this being an old knock-off.
I still can't find one with the same back print which makes me think this is an older bootleg.

Just catching up here - I looked through tshirtslayer's collection of them and I couldn't find that same back hit either. But seems like there are 2 or 3 different back hits.

It's a rare variant which is awesome, I'm not certain how much the metal community cares about potential bootlegs, but doubt it would hurt the value.

Thanks Jimmy, your input is appreciated