Maybe one of these similar products would be of interest:-
SMC Pentax-M 50mm f1.4 Asahi Japan Fast Prime lens
Pentax Pocket 110 Telephoto Lens 50mm 1:2.8 Asahi, Japan camera lens
Pentax 50mm F1.4 SMC M Lens PK Mount +++ STUNNING BOXED SET +++
Asahi Pentax-M SMC 28mm F/2.8 Lens For MX, K Mount Lens, Black - GOOD CONDITION