Contest!!

Be the first to answer the question to receive fabulous prizes. Just click on the "contact" link above to participate.
Here we go.. While in Savannah Georgia, Lauren and I visited Colonial Cemetery and noticed several headstones with strange dates on them. The one pictured here is typical of them. According to the dates on the headstone, the deceased was born on October 28th, 1711 and died November 9th, 1811 making him 100 years and 12 days at the time of death.
Also notice on the headstone that stated age at death is 75 years 12 days.. Here's the question.. Why is there a discrepancy in the number of years the person lived on this headstone. Remember, there are several other headstones with the same discrepancy in Colonial Cemetery. Good luck