S&W can do as can any number of gunsmiths.
6500
1980
No such serail number ever used for a 686. 50-450 USD
Your smith and Wesson model 686 is valued at 250-425 dollars depending on condition.
c.1982
Late 80s
1983 or so
80's or so
Smith and Wesson made the 686-3 in 1989. It weighs 42 ounces, has a midnight black over stainless steel finish, and is available with a 4-inch or 6-inch barrel. The production run was 5,000 units.
@1988
I just purchased a brand new 686 4' 7 shot for the cost price. I believe it came out to 579.00 @ sportman's wharehouse.
There is no 6866. There is a 686, its value can vary between 100-500 USD