80s styl aluminum door hardware , need latch as well 3 of them

Thanks for posting. This flush mount handle set reminds me of either our 82-002K or 82-008K, depending on whether the latch is oriented upward or downward. See the images below for reference. Compare both handle sets with your old hardware and see if either matches what you need.

Alternate image for 82-002K

Alternate image for 82-008K