Great read! I am just now catching this thread. You did a great job.
When I first started reading this, I was going to suggest that since it had a tube down the draft and that wide band, that it was probably a repaired pipe. But, apparently not. It fascinates me that they were putting tubes down the draft at that time.
Also, I ask only because I just have to know... if you were going to scrape the bowl down to bare wood, why did you do a salt and alcohol soak? Wouldn't just scraping the bowl back to wood remove... everything that could cause a bad taste?
Once again, great job! That's a beauty!