  We here report results of an INTEGRAL observation of the X-ray burst and
atoll source Ser X-1 performed on May 2003. The object was observed for a total
of 400 ks but nearly 8 degrees off-axis due to the amalgamation with an
observation of SS 433, the pointing target source. Ser X-1 was detected up to
30 keV with unprecedented positional accuracy for a high-energy emission; a
sharp spectral drop is evident beyond this energy. Significant variability is
seen in the 20-30 keV light curve. Comparison with previous observations
indicates that the source was in its high (banana) state and displayed a soft
spectrum during the INTEGRAL pointing. A (non simultaneous) broadband
radio-to-gamma-rays broad-band spectral energy distribution for Ser X-1 is also
presented for the first time.
