  In the course of the Hamburg/ESO survey we have discovered a white dwarf
whose spectrum exhibits many similarities with the prototype of magnetic white
dwarfs Grw+70$^{\circ}$8247. In particular several stationary line components
indicative for magnetic fields between about 150 and 400 MG are found in both
objects. However, the features between 5000 and 5500 \AA in the spectrum of
HE0241-0155 cannot be explained by stationary line components and demand a
relatively homogeneous magnetic field with clustering around 200 MG. For this
reason a pure dipole model failed to reproduce this spectral region.An
offset-dipole configuration led to some improvement in the fit but a good
agreement was only possible for a geometry -- described by an expansion into
spherical harmonics -- where most of the surface is covered with magnetic field
strengths strongly clustered around 200 MG. This may indicate the presence of a
large magnetic spot whose presence could be tested with time resolved
spectro-polarimetry.
