Was this LH or LX?
 

I had a flight, ZRH-MUC ticketed as LX, but I can't recall if it was operated by LX or LH.

It was a CRJ, tail D-ACRC. I can't find European online tail number search.

D, being Germany (Deutschland) leads me to believe that it was LH.

Given the D- registration, the bird was definitely German. I would think it was actually Lufthansa CityLine, which is run as a seperate entity. Last I checked, they flew all services between ZRH and MUC.

D-ACRC is a Eurowings (member of LH Regional) plane

http://www.airliners.net/open.file/0932898/M/

Who would have believed it... an actual photo of the plane I flew! Wow...

It's now coming back... yes Eurowings it was. :)

Ok, final question: does this count as operated by LH (or "LH metal")? I'm hoping for UA EQMs for this hop.

If it was after April 1, I would guess you'd get EQMs... If before, it's anybody's guess, but I would expect only RDMs.

It was Mar 20th. But I'm unsure why you mention the Apr 1 date?!

I think LX was supposedly joining *A on Apr, but since Eurowings is owned by LH (correct?) why is this relevant?

Eurowings flight do get M&M status miles according to http://www.eurowings.de/en/552.htm

It counts as operated by LH, like all LH Regional flights. LH owns 51 % of Eurowings but that doesn't matter either. Other members of LH Regional like Contact Air, Augsburg Airways aren't owned by LH, but their flights for LH Regional still count as operated by LH.
Eurowings has nothing to do with Swiss who joined M&M/star on April 1st.

it's relevant because the flight was booked on the LX flight number rather than the LH one