We have compared the results from a model for the chemical evolution of an elliptical galaxy with initial luminous mass of 2 \cdot 10 ^ { 10 } M _ { \odot } and effective radius of 2 kpc with the recent abundance determinations for the Lyman-break galaxy MS 1512-cB58 at a redshift z=2.7276 .
After correcting the iron abundance determination for the presence of dust we concluded that the observed [ Si/Fe ] , [ Mg/Fe ] , [ N/Fe ] are consistent with our model when a galactic age between 20 and 35 Myr is assumed .
Moreover , the [ N/O ] ratio also suggests the same age .
This age is in very good agreement with other independent studies based on the analysis of the spectral energy distribution suggesting that this object is younger than 35 Myr .
Therefore , we suggest that MS 1512-cB58 is a truly young normal elliptical galaxy experiencing its main episode of star formation and galactic wind .