Originally posted by Kobayashi.K The SMC Takumar manual seems to be a bit misleading and list all lenses as SMC, although many of them were only released as S-M-C (Super-Multi-Coated) or older version. Never as SMC version.
FI the Takumar 500mm F5 were never released as Super-Takumar, Super-Multi-Coated Takumar or SMC Takumar versions. Only as Takumar 500m F5.
But it is listed as SMC Takumar 500m F5 in the manual.
It seems that the only SMC Takumar m42 lenses Pentax released were.
SMC Takumar 15mm F3.5
SMC Takumar 50mm F1.4
SMC Takumar 55mm F1.8
SMC Takumar 55mm F2
SMC Takumar Zoom 45-125mm F4
But also a couple of the S-M-C lenses were equipped with rubber focus ring. I believe all M42 zoom lenses had rubber focus ring, even Super-Takumar Zoom 70-150mm F4.5.
IMO the best place to check the versions of m42 Takumar lenses is here on PF.
Pentax M42 Screwmount Lenses - Pentax Lens Reviews & Lens Database