While knowing the serial number would be the most helpful in guesstimating the revolvers Date of Manufacture, your gun is from the production that began in 1986, just like mine
Ours are product code 103951.
The 1998 revolvers have full lug barrels
Mine did not come to me with the original Factory Combats. I eventually put this next generation Factory Combat grip on it when they became available to me. I have since put a more era correct grip on them, but have not shot new photographs.
I love mine. I even carried it in an OWB holster for several years beginning back in 1991 when I bought this one. My carry ammunition was the now discontinued Remington 179 grain SJHP load.
BTW, we have Lew Horton for getting the Factory to go down the path of round butt frames on the N-frame.
He is also responsible for the start of the N-frame snubbies (3"). Prior to his ordering them the N-frames only went down to 3 1/2" barrels with the Model 27 (4" with the others). I know it is just and Inch or 1/2 inch but with that and the round butt frame it makes a big visual difference