"Standard New Model Super that someone lopped two inches off the barrel, and added the stocks. In my opinion."
I don't think Ruger was producing any short barrelled Supers in 1980. If I'm correct,, all the Supers of that era were 7-1/2" barrels.
"I don't know where you looked to have the serial number come up blank.
The Ruger site."
If you look at my post,, I listed my source. The RENE, which is short for; "Red Eagle News Exchange." It's the best source for the best info available in print on Rugers. And,, just because Ruger has stuff on their website,, does NOT mean it's correct. There are many "mistakes" in their posted info. Sadly,, the info there is only as good as the people putting it in,, and often,, they are NOT familiar with much of the actual history or details.
"Can't read the script side but I thought I saw "Hunter" in it."
Not a Hunter. Hunter versions had the longer barrel, are Stainless, and have scope mount cuts on the top of the barrel rib. And there weren't any factory Hunters in 1980.