Spectra of the secure multiple images (QF = 3) included in our catalogue. The vertical line indicates the observed position of the main spectral feature used for the identification ([OII], MgII, and Lyman-α). We show the re-scaled variance in grey. The measured redshift and its QF are indicated in each figure title. The HST cutouts are 2″ on each side, and we provide the ID_MUSE of the object in Table A.1.