Picked this up at a pretty decent price the other day. In excellent condition, good bore, good trigger, tight mechanism. Marked with patent numbers on the side of the frame; ASM and EMF are discretely marked on the bottom of the barrel, and the 'New Dakota' marking on top of the barrel is quite faint and easy to miss during casual inspection. The mainspring is a little heavy and I may adjust that, but I will shoot the gun before I mess with it.
I actually bought it to convert to a Sherrif's model, but it's so nice, and this is my favorite barrel-length for a SAA so I think I'll probably leave it alone.