My grand father collected money from all over the world. I began showing the collection all over the world and selling some of it 20 years ago. When I was showing paper money seminar in Wash. D.C 2 years ago I was teaching collectors how to take Marco Photos of money. 2 US Secret Service Agents questioned me what I was doing these seminar. They felt I was teaching someone how to counterfeit paper money. That was funny because I was a criminal profiler and Investigator for LAPD. They still asked me if I could not show people all of my knowledge of Marco Photography .