I appreciate fine machine work no matter what the occasion. Whether it is a fine vintage Heuer or Beretta shotgun, and yes even a prop shaft. This work (as I think you can see) is far beyond what I expected in a lowly underwater shaft.
The nut, locknut, keys and cotter key came with the shaft as a part of the price.
Even the forward end that mates up with the transmission hub is polished to an almost jewelry grade finish. AMAZING !
Below is what I would have normally expected to see. Both will work, and probably both will work equally fine, however I do admire the workmanship any time I encounter top quality work. These days it's in short supply too.
Regards, Paul