These are shoddily scanned pieces of the complete TMFX resin kit of Corvo's mask created from the promotional Bethesda model.
These do not serve at all as a replacement for the actual product but rather as reference, as the scans are full of holes and not the best quality. I'm releasing all these files for free completely at my own expense.
That being said my review of the etsy kit is that frankly, it's quite shite. It does not come together, is missing a majority of the necessary components, the casting quality is subpar and not to mention the exorbitant price tag for what you receive.
Don't get me started on how it is massive, you cannot feasibly wear it or see out of it, and is wildly inconsistent in places from the game model, which you can glean from the various replicas they've been commissioned to create.
None of this is really evident from the listing, nor is there any helpful resources on how to put it together. It is just an antiquated product that does not really do much good for even diehard fans, proof being no one alive has ever been able to put this together properly.
So here's all the pieces, in real world scale and orientated, ready for you to manipulate to suit your own needs. You're welcome!
Special thanks to @thewallmonkey for providing the kit!
For clearer reference and turnaround views visit my instagram @plasticbruv