  Aims: We study the supernova remnant 0506-68 in order to obtain detailed
information about, among other things, the ionisation state and age of the
ionised plasma. Methods: Using the Reflection Grating Spectrometer (RGS)
onboard the XMM-Newton satellite we are able to take detailed spectra of the
remnant. In addition, we use the MOS data to obtain spectral information at
higher energies. Results: The spectrum shows signs of recombination and we
derive the conditions for which the remnant and SNR in general are able to cool
rapidly enough to become over-ionised. The elemental abundances found are
mostly in agreement with the mean LMC abundances. Our models and calculations
favour the lower age estimate mentioned in the literature of $\sim4000$ year.
