1968 10 Paise : Kolkatta Mint Die Error Coin | KM # 26.2

Detail as per standard catalog : 

See KM # 26.2 in above Pic
See the digit "9" in 1968. 
This error was due to use of damaged die to mint coins by Kolkatta Mint.
Non error version of 1968 10 paise coins also available.
Left Coins is error coin and right coin is non error coin.