Re: S & W 38 caliber
If the gun is not a 64 (and by the look of that front sight, it's too old to be), then it has certainly been refinished, as nickel Smiths have color-casehardened hammers and triggers. A nickeled hammer and trigger is always the sign of a refinish.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.