The Pentax K-1000 had been produced from 1976 to 1997 and was a real favorite as it was a real work horse - the K-1000 remains an excellent camera for student photographers.
This is actually a K-1000 SE (Special Edition?). I could not find any information concerning the SE as far as when it was made but the best I could do is between 1976 and 1990 but would guess it was made early due to the SN (6035689).
