We present CCD BV photometry of the intermediate age open cluster Collinder 110 , a nearby , scarcely populated , and poorly studied system .
There is no literature information on the metallicity , so we tested several possibilities , and found a slight evidence of sub-solar abundances .
Using the synthetic Colour - Magnitude Diagrams technique we estimate the following parameters : age between 1.1 and 1.5 Gyr , reddening 0.38 \leq E ( B - V ) \leq 0.45 , distance modulus ( m-M ) _ { 0 } between 11.8 and 11.9 if the cluster metallicity is solar , or age between 1.2 and 1.7 Gyr , reddening 0.52 \leq E ( B - V ) \leq 0.57 , distance modulus ( m-M ) _ { 0 } between 11.45 and 11.7 if the cluster metallicity is sub–solar .