First of all, THANK YOU for taking the time to compare with photos. This is amazing. This t-shirt is okay. For one, it's a screen print, you can tell by the cracking on both and the halftone dots. The tag is legit. I have yet to discover a fake Brockum collection tag, but this one checks out. Colour...

Good question. I don't have a radar on these at all. But I know there's value there. I checked worthpoint and the brand generally tops out at around $250. I didn't see any of the ones you have in the list.

These ones continue to baffle, take a look at this thread, we did a deep-dive into these, that explains the print variances:

real-or-repro-f8/legit-check-for-megade ... t6187.html

Something is fishy here....first of all size S. Also why would a size S be 21.5" pit to pit? That's an L measurement. I think the double stitching it out of place, but would have to investigate to make sure - should be single stitched for a Giant Tee Jays.

There are a handful of back prints on these, some with tour dates and some with just COUNTDOWN TO EXTINCTION. I even spotted one with the Megadeth logo in Metal on the front; the back is plain. Giant copyright, and it makes sense it would have that generic style euro tag. I'd give this a pass and it...

Any more photos? should be a back print. What about the tag? Which website is it? That front print looks very crisp and would be very tough to pull off convincingly. There's a new trend of bootleg websites that use other people's photos of true vintage and then send them a DTG print. Also, I haven't...

Does the listing have the measurements?

A 70s M that's 100% cotton (so they also shrunk, although it looks deadstock so maybe hasn't been washed/dried yet), might be a men's XS, although I don't think that even exists in modern sizes. Maybe it would be a Youth Large? ha.

I think so. The colors are the only thing I can find that's off about it. And Cygnus, is one of those tags people suspect is on fakes, but it's legit:

https://www.defunkd.com/authentic-tags-archive/

Ok touch base once you have it!

That seems like a fair price to me. Unique design, not politically correct, 70s. It's going to be quite Small given it's a 70s M. And it's yellow, which typically, isn't the most popular t-shirt color.

I don't see any issues with authenticity!