Help identify mid-90s steel MTB frame
I owned a Ritchey steel frame from ~1999 and this doesn't look like a Ritchey of that era to me.  


The cable stops are welded to the top of the frame.  Mine were welded underneath.
There are no lugs on the frame.  All the Ritcheys I have seen from that time had lugged frames. 


My guess is that the frame was built by someone else using Ritchey dropouts.  I would think those unusual looking cable stop clusters might be a clue, but maybe they're more common than I am guessing.

There's more info here that seems to indicate (though not definitively) that the serial number doesn't match the pattern of that time for Ritchey, and that the company was in fact selling parts to other manufacturers.