East India Company Coins

On the reverse side of the 1/4 and 1/2 anna coins from 1835 there are berries on the wreaths. On the right and left side of the wreath the number of berries varies as well as the shape of the ribbon bow at the bottom of the wreath. What is the significance of these variations, and is there anyplace to find a reference.
thank you
Joe

Country is so large there are three different mints.
Bombay
Calcutta
Madras
So there may be slight differences.