Hi Mandy
check the Jezler homepage. They are still in business:
http://www.jezler.ch/index.htmlThe pattern is Kreuzband (crossed band). They made it with and without flower leaf decoration (Blatt = leaf) on the back. So two types exists, "Kreuzband mit Blatt" and "Kreuzband ohne Blatt". Yours is of course with leafs, "mit Blatt". The pattern was created around 1907. From the type of the Jezler marks, your set is from that time, around 1910, not much later.
Kind regards
Jörg