Just tidying up some blasts from the past (including some very ancient ones), largely for the benefit of anyone searching the site for information.
It’s beautifully done, and that’s a partial ‘LHR monogram (with a reversed L) GERMANY’ mark for Lorenz Hutschenreuther, based in the Bavarian town of Selb. Mark comparisons below showing a complete mark from an unrelated piece, another partial mark from the similar vintage piece in an Etsy listing, and your partial mark: