Metallicity [Fe/H] or [M/H] as a function of T_eff, colour-coded with G-band apparent magnitude, of cluster HSC 1725 sourced from the six catalogues. The black dashed line in each panel marks the median metallicity of the represented members. The two thin black dashed lines represent the median plus and minus the MAD. Individual error bars are represented but for the parameters from Andrae et al. (2023b) we represent the typical uncertainties quoted by the authors, 50 K in T_eff and 0.1 dex in [M/H] in the top right corner of the two panels.