We present the analysis of an unpublished VLA archive observation made at 1.49 GHz in 1989 toward the supernova remnant G1.9+0.3 , the youngest such Galactic object known .
This observation agrees with the time evolution in angular size previously reported .
We derive an expansion rate of 0.46 \pm 0.11 % per year and an age of 220 \pm _ { 45 } ^ { 70 } yr for the remnant by comparing the 1985 and 1989 images .