A very unusual sloping top tube on it. I've never seen that on a Rivendell other than the newer Sams/Bombas/Hunqs. Depending on the tire clearance, that would make an AWESOME drop-bar MTB!!! I wonder who built it. Pic of the BB is craptastic, so can't make out if anything else is on it other than the # posted by seller. With a JB paint job, it's post-Waterford build, but w/out a letters in the code, don't know the builder.