No. I'm pretty sure you have a 686-4 (open the cylinder and look at the frame for markings indicating the "dash" designation). As such, it would have been standard with case hardened hammer/trigger as opposed to the earlier versions flash chromed controls.

Unless (and it's hard to tell in the pics you posted) those colorations are rust or corrossion of some type, the pic shows a normal made 686-4 (no pinned sight, round butt, case hardened hamm/trigger).

Hope this helps.

On second thought/look. Yes, there is a serious problem with your gun. I think, to keep you and those around you safe, you should let me offer you (and I'll be generous as I need the "parts") oh...let's say...$100 to take it off your hands. That would have to include shipping of course.