Hi Frederic,

I know them. They are always present at the Dutch vintage watch fair Rikketik.I have seen them there for at least 5-6years now.I never bought from them though as they mainly specialize in parts. However, the fact hat they exist this long must mean that they are a serious company. I also know that Jasper knows the owner well, sp maybe send him a mail if you need more info.

Hope this helps.

Ron