John, its good to hear from you and good to hear your getting better after the flu. That is one mean strain.
Your 686 sounds like a nice one. I had one with out the box that I sold for a bit more. You did quite well. The rear sight sounds proper for it as do the grips. I'd guess its an early 90's gun off hand. I'm sure someone with the standard catalog will chime in with a closer date.
enjoy it they shoot very well!