  We report the first successful measurement (with HST/WFPC2) of a significant
proper motion for a V~ 25 object which we had proposed as the optical
counterpart of the radio pulsar PSR B0656+14. The yearly displacement of 43+/-
2 mas is highly significant and, while in agreement with early, rougher, radio
measurements, stands out for its vastly improved accuracy. Together with the
report of a possible optical pulsation (Shearer et al. 1998), we regard this
result as the final proof of the optical identification of PSR B0656+14.
