UV Houses: In case you glow an ultraviolet light over a Invoice, the security thread will glow. Each and every denomination glows a different shade. The thread is embedded in (not printed on) the paper and operates vertically with the distinct industry to your still left in the Federal Reserve https://juliusiklie.glifeblog.com/37505943/hong-kong-100-dollar-things-to-know-before-you-buy