  Discerning the nature of open cluster candidates is essential for both
individual and statistical analyses of cluster properties. Here we establish
the nature of thirteen cluster candidates from the FSR cluster list using
photometry from the 2MASS and deeper, higher resolution UKIDSS-GPS and
VISTA-VVV surveys. These clusters were selected because they were flagged in
our previous studies as expected to contain a large proportion of pre-main
sequence members or are at unusually small/large Galactocentric distances. We
employ a decontamination procedure of JHK photometry to identify cluster
members. Cluster properties are homogeneously determined and we conduct a cross
comparative study of our results with the literature (where available). Seven
of the here studied clusters were confirmed to contain PMS stars, one of which
is a newly confirmed cluster. Our study of FSR1716 is the deepest to date and
is in notable disagreement with previous studies, finding that it has a
distance of about 7.3kpc and age of 10-12Gyr. As such, we argue that this
cluster is a potential globular cluster candidate.
