Well even not speaking German it's easy to see he is one clever guy.
I found some stick on BECC vinyl letters on the Maritime Models site, they are just 2mm. extreamly fiddley to apply but just the effect I wanted, I knew you could get sizes down to 3mm. but they would have been too large, Steve kindly sent a Becc catalogue with the letters which was posted very quick, they do an amazing amont of detailing graphics.