[That needs a letter. There are some Pinto 357's in the world. Better photos would help, but I see the proud heads of the sight base....And the non-relieved presentation stocks add to the possibility.....maybe
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srgranke,
Besides what SAFireman has noted...The fact it has the Trademark Rollmarked on the Left Side rather than the Right...Also leads me to believe Your Pre-Model 27 was Special-Ordered!! Most definitely needs a Letter!!!
And by the way..."PLEASE" get rid of that Trigger Shoe...Ha!!-Ha!!
Great score...They sure don't come around very often!