Hi everyone! I'm another first-time poster with a shower valve mystery that our local plumber wasn't able to solve. Can anyone identify this valve so that we can find a replacement cartridge? The only identifying markings I could spot are on the pipe (?) behind/under the left attachment point, but they're impossible to make out. The shower was likely installed around 2001 or 2002 if that helps. From previous posts, it appeared that it might be a Grohe or Hansgrohe, but I couldn't find a match in their catalogs. Help please? Thanks.