Crown cap introduced in 2002.

In 2008 appaers this one, the (R) sign is a little bit bigger 

In 2009 this version, now no (R) sign, but TM.

You must have good eyes (p.e. in the shop) to see the difference.

From left to right

2003 characters with red color in it

2007 darker background and characters with red colorin it

2009 looks like 2003, but characters have now brown color

2003                                   2007                                   2009

Gulpener, font of 1825 changed

left crown cap from 2002...2005

right crown cap from 2005...2007

A little defference? No, our sun has made the difference. So protect your crown caps from sunlight.