Averaged α-element abundances for our sample (black dots) in comparison with stars in the solar neighborhood from Bensby et al. (2014, light gray shade) and in the Galactic bulge (Bensby et al. 2013), shown in orange. The best cluster candidates, selected on grounds of their kinematics and position, are highlighted in red, while blue symbols denote the two stars with GC properties except for deviating abundances.