Context : The SNRs known in the Local Group show a variety of morphological structures that are relatively uncorrelated in the different wavelength bands .
This variety is probably caused by the different conditions in the surrounding medium with which the remnant interacts .

Aims : Recent ATCA , XMM-Newton and MCELS observations of the Magellanic Clouds ( MCs ) cover a number of new and known SNRs which are poorly studied , such as SNR J0528–6714 .
This particular SNR exhibits luminous radio-continuum emission , but is one of the unusual and rare cases without detectable optical and very faint X-ray emission ( initially detected by ROSAT and listed as object [ HP99 ] 498 ) .
We used new multi-frequency radio-continuum surveys and new optical observations at H { \alpha } , [ S ii ] and [ O iii ] wavelengths , in combination with XMM-Newton X-ray data , to investigate the SNR properties and to search for a physical explanation for the unusual appearance of this SNR .

Methods : We analysed the X-ray and Radio-Continuum spectra and present multi-wavelength morphological studies of this SNR .

Results : We present the results of new moderate resolution ATCA observations of SNR J0528–6714 .
We found that this object is a typical older SNR with a radio spectral index of \alpha =–0.36 \pm 0.09 and a diameter of D=52.4 \pm 1.0 pc .
Regions of moderate and somewhat irregular polarisation were detected which are also indicative of an older SNR .
Using a non-equilibrium ionisation collisional plasma model to describe the X-ray spectrum , we find temperatures kT of 0.26 keV for the remnant .
The low temperature , low surface brightness , and large extent of the remnant all indicate a relatively advanced age .
The near circular morphology indicates a Type Ia event .

Conclusions : Our study revealed one of the most unusual cases of SNRs in the Local Group of galaxies – a luminous radio SNR without optical counterpart and , at the same time , very faint X-ray emission .
While it is not unusual to not detect an SNR in the optical , the combination of faint X-ray and no optical detection makes this SNR very unique .