Replacement Windshield Question

Thinking about replacing the windshield on my very original '72 Duster. Does anyone know if date coded reproductions are available and who sells them? As far as I can tell, the AMD re-pops are not available with date codes. Was date coding glass even a thing back in '72 for MOPARs? Are there NOS examples out there and if so, who has them? Thanks FABO! Doug