>>10296413>over DECADES of continuous exposureNope, a few months to a year is generally enough to notice damage.
>dinky little blacklightis pointless, unless you place it really close to the paint you want to light up.
But, this being a display cabinet, you would want the light to be reasonably away from the things you are trying to display and covering a reasonably wide area, and that means you are looking at at least 10-20W UV source, which is not "dinky".
The alternative would be UV lasers (which *are* a thing), pointing at exactly the patches of paint you want to light up, but good luck with that setup.
