Differential-reddening corrected (black dots) and uncorrected (orange dots) Optical+NIR CMD. The best isochrone fit (red line) to Ton 2 stars (black dots) located within 3.5 arcmin from the cluster center for VVV+2MASS and Gaia EDR3 photometry is shown in panels a and b, respectively, while Ton 2 sources observed with the APOGEE-2 spectrograph are highlighted in the differential-reddening corrected CMD shown in panel c, where the symbol size is proportional to the brightness in the K_s band, and the color-coding refers to the S/N of the spectra (see color bar). Ton 2 sources with RV information from the literature (Baumgardt et al. 2019) are highlighted as red open circles.