Either my cobalt blue uranium honey pot or the heavily leaded wine glasses

This is why the Cannonball Run was created

I would highly recommend getting a UV flashlight with a 365nm wavelength. That wavelength makes leaded glass easy to identify and glow blue. I got one and lead is still very much prevalent in a large amount of drinking glasses that I shine it on.

China still doesn’t really have restrictions on lead and brass plumbing fixtures in America still had 8% lead as recent as 2014