The following would generally be the correct TPH's (selector markings) for the various models:
HK G3 (SF)(1962)
HK41 (SF)(1965/1966)
HK41 (SF)(1972/1974/1975)
HK91 (SF)(1974-1980)
HK91 (SF to 0 to left of 1, sporadically interspersed)(1981 transition)
HK91 (0 to left of 1)(1982-1986)
HK91 (0 to left of 1 to 0 to right of 1, sporadically interspersed)(1987/1988 transition)
HK91 (0 to right of 1)(1989)
HK911 (0 to right of 1)(1989)
HKSR9/SR9T/SR9TC (0 to right of 1) (1990/1993)
HK PSG1 (0 to right of 1)(1983-2004)
HK43 (SF)(1971/1974)
HK93 (SF)(1974-1980)
HK93 ( SF to 0 to left of 1, sporadically interspersed) (1981 transition)
HK93 (0 to left of 1) (1982-1986)
HK93 (0 to left of 1 and 0 to right of 1, sporadically interspersed) (1987 transition)
HK93 (0 to right of 1) (1988/1989)
HK94 (SF) (1982)(1 sample)
HK94 (0 to left of 1) (1983-1986)
HK94 (0 to left of 1 and 0 to right of 1, sporadically interspersed) (1987 transition)
HK94 (0 to right of 1)(1988/1989/1991)
HK SP89 (0 to right of 1) (1989/1990)
HK SP89 (0 to left of 1 and 0 to right of 1, sporadically interspersed)(1992)
HK SP89 (0 to right of 1) (1993)
Tony
HK G3 (SF)(1962)
HK41 (SF)(1965/1966)
HK41 (SF)(1972/1974/1975)
HK91 (SF)(1974-1980)
HK91 (SF to 0 to left of 1, sporadically interspersed)(1981 transition)
HK91 (0 to left of 1)(1982-1986)
HK91 (0 to left of 1 to 0 to right of 1, sporadically interspersed)(1987/1988 transition)
HK91 (0 to right of 1)(1989)
HK911 (0 to right of 1)(1989)
HKSR9/SR9T/SR9TC (0 to right of 1) (1990/1993)
HK PSG1 (0 to right of 1)(1983-2004)
HK43 (SF)(1971/1974)
HK93 (SF)(1974-1980)
HK93 ( SF to 0 to left of 1, sporadically interspersed) (1981 transition)
HK93 (0 to left of 1) (1982-1986)
HK93 (0 to left of 1 and 0 to right of 1, sporadically interspersed) (1987 transition)
HK93 (0 to right of 1) (1988/1989)
HK94 (SF) (1982)(1 sample)
HK94 (0 to left of 1) (1983-1986)
HK94 (0 to left of 1 and 0 to right of 1, sporadically interspersed) (1987 transition)
HK94 (0 to right of 1)(1988/1989/1991)
HK SP89 (0 to right of 1) (1989/1990)
HK SP89 (0 to left of 1 and 0 to right of 1, sporadically interspersed)(1992)
HK SP89 (0 to right of 1) (1993)
Tony
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