GE HVAC Date Code - age needed?

These are numbers off the inside unit of a General Electric HVAC unit :

MODEL 21 WE924F1C Date Code 651
I.D.FAN MOTOR 1.3 AMPS 210 V. 3 PH. 30 CY 1/5 HP
Refrigerant 22 Only TEST PSI 350
Tyler, TX NP21A930141 Made In USA

I need to know what the manufacturer date on this unit is, please? And how is that determined by these numbers or where can I search to find this information, please?

Thanks, Pat

REsidential GE’s typically have their data tag on outside of condensor.

The guy you asked at the HVAC forum said 60 years old.