Looks basically like a M-1950 Target .44. What's this HE stuff? It's not a .44 Military. Both of those and all Smiths made for many years by then were Hand Ejectors.
The barrel length wasn't offered, but we established that it's a cut-down barrel. But why any surprise about the rear sight? Those were std. on the M-1950 Target .44 Special.
I could easily be missing something here. ??
I suggest removing the trigger shoe. See if it's already rusted underneath. I hate trigger shoes.
This gun is odd. It had a longer barrel, suitable for target work, and has those bulky Herrett (?) stocks and a trigger shoe, but the barrel was shortened to make it a handier holster gun.
You didn't ask, but if it was mine, I'd pull the trigger shoe and those bulky grips and put on Magna stocks, with a Tyler adaptor if need be or get a set of Walter Roper style grips from Keith Brown or Herrett. Or, just install the small size of old two-piece Pachmayr Presentation grips and find a good holster and make that a general purpose sidearm for the outdoors. Is Open Carry an option where you live, for hunters, anglers, etc.? If not, there are ways to conceal a big N-frame gun.
Yes, I'd crown the barrel IF you have access to a really GOOD gunsmith.
You probably know that most factory .44 Spcl. ammo is puny, but I think Buffalo Bore makes a hot load. Or, do you handload?
Overall, this (my suggestions) reminds me of the sort of gun project that Skeeter Skelton used to write about in, Shooting Times.
BTW, don't call the yoke the crane. Did you sneak in here from the Colt board? Ruger may call that part the crane, too.