It's sfp I'm thinking it's the model before the hs. I think it's been discontinued looking at vortex website the hs only comes with 50mm objective this one is 44mm. I don't have the box.
These are great scopes for hunting. I have the 6-24 FFP and the 4-16 FFP models. The 1/2 MOA elevation adjustment gets you dialed up fast and the capped windage turret won't get bumped in your pack or scabbard. If I had the funds I'd be all over this, I'll pass the word along and good luck with your sale.