I found an article that has a little more info but also an interactive demo of why they're hard to forge http://www.fsd.it/usefuldesign/german_plates_font.htm

I found an article that has a little more info but also an interactive demo of why they're hard to forge http://www.fsd.it/usefuldesign/german_plates_font.htm http://www.fsd.it/usefuldesign/german_plates_font.htm