It’s been powder coated so no sign of any numbers, the coat is too thick so unless I sand a lot back I can’t see. Looking to get i refinished at some point though.
I'm not entirely sure that is actually a StumpJumper. The seat tube collar looks too chunky, and the cable guides don't seem quite right. Can you do some close up photos of them? It might be a '93 RockHopper maybe...
I'll post some photos when I can get to it. Picture above was a before it was powder coated which is when I got it. Looking through Stumpjumper pictures on 'show us yours' there seems to be loads of variations through the years.