Hi: If it were Chalet, it would most likely be marked as such (a sandblasted 'Chalet' on the bottom). It doesn't look like Chalet or Lorraine to me. They're more likelyy to be Czech. Be a little wary of the Michel Blais site. What he has identified as C151 is definitely Harrachov, and I'm quite sure there are some other Czech pieces on there, too.
David