ok than you for taing the time to explain it to me a little ;)

No again. It's a totaly different way of printing a whole picture or document altogether. It's one of the original forms of printing. I'm not an expert on lithographing, but I'm pretty sure it was in use before the invention of the printing press. It has nothing to do with printing or duplicating an autograph per se (that I'm aware of) on an item. It is a way of reproducing an entire document, map, or picture.

If you want to learn more about lithography I would suggest you start by looking the term up on Wikipedia or using a search engine (Bing, Google, Yahoo, etc.) and go from there. While I do know a little about lithography, it's not something I'm really familiar with and don't know how else to explain it.

thank you, so its a fancy term for some kind of autopen?

No. The best way I can think to describe it is to think of the old form of printing newspapers. It is basically the transfer of ink from one surface to another. On the first surface is it actually etched in backwards so that when the ink is transfered to the second surface it looks normal.

I thought I heard everything (autopen, sec, authentic, stamped, ... )
But now I came across a Litho? is it the same as a preprint?