CR500 Resto, Keep or Replace these tires?

I’m doing a complete resto on my 95 CR500. Have already gone through the forks, linkage, wheels, bearings and the motor is up next. I’ve had the bike for 3 years and it was a good running bike. Previous owner owned it for 19 years and seldom rode it, was a well kept bike. Rear tire is a Dunlop 739 and 11 years old, front is an MX51, looks new and is 8 years old. Is age a factor even if tires look good? I hear two sides too often. First two pics are front tire. What do you all think?