I think the reason no contact adress is supplied on the website,is that all service requests are usually channeled through the Authorized Dealers network.
If it`s about service/repair you`re most likely better off getting a price quote from Nic at http://www.heuerboy.com/home.htm,Richard http://thewatchspotblog.com/ or Jasper at http://www.classicheuer.de/Englisch/indexengl.html.

: Can someone help me please. The email address is not on their
: website.

: Thank you