So, I was able to strip the frame this weekend and confirm a few more things. I apparently need a refresher or on reading calipers. So the seatpost diameter is 27.2. The bottom bracket is 70mm. The BB is italian threaded.

It does look like the face of the fork crown lug is shiny. I was not able to identify any "helical ridges" on the steer tube. What are these helical ridges (hone marks, butting ridges)? Are they identifiable by touch or should they be pretty obvious visually?

I will hopefully get the frame off for stripping this week. Any tips or requests I should be making of the sand-blasting operation?

Thanks for all the help so far!