  We report on the first observation of a single hybrid magnetic structure that
contains both a pseudostreamer and a double helmet streamer. This structure was
originally observed by the SWAP instrument aboard the PROBA2 satellite between
5 and 10~May~2013. It consists of a pair of filament channels near the south
pole of the sun. On the western edge of the structure, the magnetic morphology
above the filaments is that of a side-by-side double helmet streamer, with open
field between the two channels. On the eastern edge, the magnetic morphology is
that of a coronal pseudostreamer without the central open field. We
investigated this structure with multiple observations and modelling
techniques. We describe the topology and dynamic consequences of such a unified
structure.
