Sirchie UV7321 Fluorescent Invisible Coin Lacquer, 1 Ounce

This is a frost-colored Lacquer that rapidly dries clear, leaving an invisible but highly fluorescent tag. It is used primarily on coins involving vending machines and parking meters in tagging/tracing situations. Apply with a swab or brush. It fluoresces a brilliant green when exposed to either longwave (UV) or shortwave (UV) radiation.