  We report the results from a detailed analysis of an archival XMM-Newton
observation of the X-ray source XGPS-I J183251-100106, which has been suggested
as a promising magnetic cataclysmic variable candidate based on its optical
properties. A single periodic signal of 1.5 hrs is detected from all EPIC
cameras on board XMM-Newton. The phase-averaged X-ray spectrum can be
well-modeled with a thermal bremsstrahlung of a temperature kT~50 keV. Both
X-ray spectral and temporal behavior of this system suggest it as a eclipsing
cataclysmic variable of AM Herculis (or polar) type.
