Spectra of the five carbon stars for which a spectrum was obtained. J045543.20-675110.1, J050830.51-692237.4 and J050733.83-692119.9 remain part of our sample of post-AGB stars, but J055414.26-684020.4 and J050457.64-670511.9 are still on the AGB. All spectra were translated vertically in steps of 3 units to increase the visibility of the plot and normalised with respect to the region from 7500–8500 Å. The upper spectrum of J050830.51-692237.4, which does not include this region, is scaled to emit the same amount of flux in the region from 6000–7000 Å as the lower spectrum of this star. The vertical grey lines indicate the wavelengths at which spectral features of CN (solid lines) and C₂ (dot-dashed lines), indicators of C-chemistry, are expected, corrected for the average radial velocity of the LMC (262 km s^-1, van der Marel et al. 2002).