Ok, 18 grams per dozen. The rendering is actually the Alpspitze, which should eliminate any dining areas on the Zugspitze. While it is normally associated with Garmisch specifically, it would seem odd to leave out Partenkirchen after 1935 although the main ski area is referred to now as "Garmisch Classic". Tourist collectible is possible, but someone having a set of six makes me doubt this. On the other hand, I do have fine dining china pieces (household type, not shelf trinket stuff) emblazoned with the city crest over the decoration..so maybe, complimentary silverplate sets could have been available for purchase in stores.
The Armed Forces Recreation Center did have green stripe china on white with the full name spelled out rather than a symbolic logo, and I would expect the hotels they managed used markings for their actual names. If this was the source, guess we'll just have to wait until a theif confesses to their casual crime. (Navy personnel seem to walk off with everything that isn't welded down!) Thanks, Bahner.