Paul that close up photo shows it much better. It doesn’t look hand ground, it looks machined. And a finish applied as you posted. It looks factory made, just not S&W.
There’s several threads about reproduction SATs with excellent photos to tell how to spot them. This one isn’t because it isn’t a reproduction of a Smith SAT, it could be an improved version made and packaged like yours, that were sold before S&W began hollow grinding their SATs. That’s my 2nd speculation at this moment.
My top speculation is a bunch of tapered tip Smith SATs were modified to sell.
If it’s a reproduction an in-hand inspection will reveal it.
I’ll be the first to call it a Smith SAT with more evidence. I’m just not convinced yet.