I downloaded the Bhavcopy of F&O section of Nifty for 06.07.2011 to cross-check the abnormal (previous close) option price of Rs. 208.25 for Minifty 6000 CE. In fact, on 06.07.2011, not even a single such contract was traded (though the close price is shown there also as Rs. 208.25). Likewise, there is NIL turnover, no open interest in that call option and no change in open interest on that day. Thus, the previous close of Rs. 208.25 was mentioned wrongly on 07.07.2011.
Just out of curiosity, I checked Bhavcopies of several other previous dates. After researching for some time, I found that the aforesaid Minifty 6000 CE July2011 contract was introduced on 29.04.2011 for trading and the aforesaid call price of Rs. 208.25 finds place (as closing price) on the said first day of trading itself, and that too when there was no trading in this contract even on that day!!! Thereafter, I found that the same closing price of Rs. 208.25 is being mentioned in the Bhavcopies of various subsequent days, without there being any trading.
It is seen that the aforesaid call option contract of Minifty was traded for the first time only on 07.07.2011 (a total of 6 contracts with OI of 120).
Therefore, it appears to be a mistake of some default price being accepted by the system on its own. No contract of said call option of Minifty has ever been traded at the price of Rs. 208.25 as verified by me.