M150817a
Oval containing "WIESENTHAL PORZELLAN GERMANY", with pattern name only.
Although this one looks convincingly German, it is merely an imposter mark trying to appear German or Germany-related. Some of the patterns used include "Lavender" (no number), "Herb Garden" (No.46418), "Paradise Valley" (No.32196), "Viola" (No.34758).
Terms such as "DISHWASHER PROOF", "FREEZER TO OVEN", or "MICROWAVE SAFE" clearly show that these items are not that old. "DISHWASHER PROOF" (note the difference to "DISHWASHER SAFE"), for example, is defined in the 2001 European standard DIN/EN 12875 and was quickly replaced by registered symbols to improve international use.
M150817a
Oval containing "WIESENTHAL PORZELLAN GERMANY", with pattern name only.
M150817b
Oval containing "WIESENTHAL PORZELLAN GERMANY", with pattern name and code.
M150817c
Square containing "WIESENTHAL PORZELLAN" above "WIRTSCHAFT KWALITÄT".
M150817d
A plain and simple word mark reading "WIESENTHAL COLLECTION".