Noob looking for info on a RZH1 mask

Simply put looking for info on a mask in my collection. Sorry if theres a better place for this post to go. Its my grail piece a RZ H1 QOTS clean, but not marked artifact like the others I’ve seen online. Instead it has Nichols hardware store mask 1978 inscribed going up the back slit of the mask. Its only markings inside are a signature and QTOS 2011. Any help or info is welcomed and appreciated.
Edit: was told it was a DT QOTS but never have had proof and just assumed it was actually just a QOTS since it only has the one signature.
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It’s possibly an Artifact originally done by Russell. I know he did them before selling the mold to Sam McCain.

Looks like a QOTS Buried clean. Not an artifact. Name of the guy or “QOTS” is or was Scott

Buried

Thanks for the info