What was changed on the obverse and reverse sides of banknotes in denomination of 50 Lari and why?

On the obverse side of the banknote the monastery complex in cave “Vardzia” and bas-relief images from Pitareti Virgin Monastery of XIII century were added to emphasize the content, different portrait of King Tamar was used with improved relief and volume, which allows for easier identification of the denomination. 

On the reverse side one of the pages of astrological tractate as well as an ornament (which was on the obverse side of the previous banknotes) and the Coat of arms of Georgia (as an obligatory attribute for currency) were added.