  We report the discovery of the most complex arcsec-scale radio gravitational
lens system yet known. B1933+503 was found during the course of the CLASS
survey and MERLIN and VLA radio maps reveal up to 10 components. Four of these
are compact and have flat spectra; the rest are more extended and have steep
spectra. The background lensed object appears to consist of a flat spectrum
core (quadruply imaged) and two compact "lobes" symmetrically disposed relative
to the core. One of the lobes is quadruply imaged while the other is doubly
imaged. An HST observation of the system with the WFPC2 shows a galaxy with an
axial ratio of 0.5, but none of the images of the background object are
detected. A redshift of 0.755 has been measured for the lens galaxy.
