Please Help to get a value from a column with simple condition

Hi,
I will get a set of dates in column A from A1:A10, most of the time s the values will be same and it will be a date, So I just want a formula to get that any value as it is same , for example here 12/12/2012 is the result so I just want that one in F5, incase if column has two diff values 12/12/2012, 12/13/2012 then it should show a message as "error"

For more info I am attachig the worksheet , please look into it

Thanks in advance for great helping minds and brains


Thank you all ,

VipzLpuc2er.xlsx

hi vpnvipin, try:
=IF(COUNT(A2:A10)=COUNTIF(A2:A10,MIN(A2:A10)),MIN(A2:A10),"error")

Awesome job done by BEN , thanks a Lot buddy, Repp added...