10 years old Die hard Gold

I had a Mopar battery in my 75 360 Duster for 12 years! I drive aprox 500 miles a summer and the car is stored in the winter. The only reason I changed it, was a mechanic friend said "one day it will let you down at a car show"! I didn't want that to happen! Yes, I replaced with another Mopar battery! Hopefully, will last as long.