I purchased a pocket-gamma spectrometer last week (Radiacode 102) and brought it with me to a local flea market to find some radioactive antiques! I also found a radioactive gimbaled compass in a box, but did not buy that one.
Here is the processed Gamma spectrum measured with the Radiacode:
Photo with lights on:
Radiacode placed against it:
If I'm seeing the meter correctly it's about 30 cps or 1800 cpm. If it were at a nuclear plant we would consider it radioactive material and wouldn't let it leave. But it's certainly far below any harmful level. Source: Former Radiation Protection Manager.