1917 strange markings, importer? Proof?

[silicosys4]

Came across this today, I can't find any reference to the stamps, particularly the barrel stamp.
I don't see a S&W logo, and I see thin finish and grind/file marks...no U.S. property..
School me on what I'm looking at!

 

[robertrwalsh]

Sideplate fit looks funky to me. Wonder if it got heavily buffed somewhere along the line.

 

[alwslate]

Just looks like a 1917 that might have been somewhat pitted that has been buffed and refinished.

 

[StrawHat]

Do you have a better image of the barrel mark in question?

Kevin

 

[s&wchad]

What's stamped on the barrel? I can't make it out...

 

[s&wchad]

I also see that i has an "R" stamped on the frame. I'm not sure what that means, but it may indicate rework/refinish. Guns that were reworked for WWII typically have a 2 or 3 letter stamp indicating the arsenal (e.g. AA = Augusta Arsenal).