  Microlensing experiments are returning increasingly detailed information
about the planetary and binary systems that are being detected, far beyond what
was originally expected. In several cases the lens mass and distance are
measured, and a few very special cases have yielded complete 8-parameter Kepler
solutions, i.e., the masses of both components, five Kepler invariants and the
phase. We identify one such case that is suitable for a precision test that
could be carried out by comparing Doppler (RV) measurements with the
predictions from the microlensing solution. The lens primary is reasonably
bright (I=16.3, V=18.0) and is expected to have a relatively large RV
semi-amplitude K ~ 6.35 km/s).
