Most stamps I know were having a traditonal cross screen for each colour, but appparently there was a change to stochastic screens somehow like in the Argentina culture set!
I just wondered why nobody has looked at the offset-litho screens?
Compare the 1 and 2 Euro stamps.
Traditional screen at the left, stochastic screen at the right for the 1 euro:


I have no idea whether 2 euro also exists with a traditional screen? I suppose so!

Stochastic screen for the 2 euro:

[img]http://www.galeoptix.nl/fila/eire/thumb ... ro_121.jpg[/img