Alan that is certainly an idea but unless collectors have uv lights which is the best way to tell my modern made items they will not be able to see. The SAS beret that was sold the other day for £350 was not one of my badges but I do know the badge would glow under a UV light as I know the maker of it. I also know a dealer again who I mentioned before from Dover that would simply grind out the marks on the slider of a badge or put a new slider on it, how many badges are in collections that have had new sliders or loops? I am open to sensible suggestions. Not the stupid ignorant flippant remarks that help nobody and quite honestly make me think why bother worrying about it, but I am and have been a collector since I was 13 and know how damaging it can be to the business. Just by saying 'dont make them' is not reality.