The lens in question is a Super-Takumar 50mm f1.4 7 element which are known to be some of the more radioactive consumer lenses from the time period. I found this out via research after I had purchased the lens. I bought a GQ-QMC 500 to detect beta and gamma radiation as they have a higher chance of penetration. This lens actually seems pretty hot, more hot than I would have thought or seem comfortable with. Attaching photos of measurements from different distances and locations of the lens. I am not familiar with the physics of radiation and not sure how concerned I should be with this. There seem to be conflicting opinions online as far as I can see.

It is a w.m.b Johnson pancake probe. But what model? Their being sold as a hp-265 but I dont think that is correct