Pentax ME Super with Pentax-M 50mm f2 dd-x I've never seen that word

I've never seen that word printed on one so I have to assume they're not

shutter speeds from 1s to 1/500s (plus Bulb) and an automatic frame counter

These are manual tubes- there's no aperture automation or electronic communication- so you'll need a lens that has its own aperture ring

The SWCs are about a pure as a camera gets

Pentax ME Super with Pentax-M 50mm f2 dd-x I've never seen that wordThe Pentax ME Super is a compact, manual focus 35mm SLR camera with manual or aperture priority autoexposure. Accurate metering and shutter, with new light seals. In excellent condition, with minor finish wear, most notably a lightly engraved ID number on the rear panel. Includes a SMC Pentax M 50mm f2 lens.